7:42AM

Typical Spring weather, changing often, stubborn at other times. And this pattern will continue as we flip the calendar from May to June this coming weekend.

High pressure centered to the north controls the weather today, which will be nice – warmer than yesterday but still cooler than average. Cold front approaches Friday, warmer day except cooler South Coast, and a shower/thunderstorm threat sometime in the afternoon or at night. Front is sluggish to depart and upper level low pressure crosses the region keeping it slightly unsettled Saturday – the last day of May. But high pressure builds in for a nicer Sunday – the first day of June.

Early next week continues to look iffy, but leaning optimistic for Monday and not so much so for Tuesday and Wednesday. More on this in the next post.

Updated southeastern New England forecast…

TODAY: Mostly sunny. Highs in the 60s, some upper 50s immediate shore. Wind variable up to 10 MPH.

TONIGHT: Mostly clear. Patchy valley fog. Lows 45-50. Wind light S.

FRIDAY: Partly sunny. Chance of afternoon and evening showers/thunderstorms. Highs in the 60s, some lower 70s inland. Wind S to SW 10-20 MPH.

SATURDAY: Partly sunny. Chance of showers. Low 55. High 65.

SUNDAY: Mostly sunny. Low 55. High 73, cooler coast.

MONDAY: Partly cloudy. Low 56. High 78, cooler South Coast.

TUESDAY & WEDNESDAY: Mostly cloudy. Chance of showers. Lows 50s. Highs 60s.

7:29AM

That was not a back-door cold front. It was a weather system oriented in such a way that its cold front came from the north and northeast. The orientation of the system was determined by the upper level flow and track of the low pressure system parent to the front. But nit-picking aside, however you define it, it’s chilly, and it’s been aided by the still chilly water of the Atlantic. This very cool air will hold today as high pressure starts to build down from the north, but it will take all day to dry out the moisture we have in place. So, drizzle and showers are possible in the morning, and clouds will hang on much of the day but will start to break, possibly before the day is over, from north to south. Will anybody see sun before day’s end? I wouldn’t count on it, but I also would not rule it out. Let’s see how lucky we get. Best chance for any sun will be northern MA and southern NH.

High pressure will continue to press southward tonight and Thursday, finally clearing it out. Though it will be milder tomorrow than today will be, we’ll still be in the cool air, but will have the benefit of strong late May sun to warm it up a bit, especially inland.

Oh look, the ocean influence will be all but gone by Friday (unless you live on the Cape or near the South Coast) but just in time for the approach and passage of a cold front. But a good amount of the day may end up nice before the threat of showers and thunderstorms increases west to east.

The cold front the passes on Friday will probably be sluggish to get out of here, along with passing upper level low pressure, meaning that Saturday may start damp and struggle to clear out. With luck, Sunday (the first day of June) will be a very nice day.

Early next week: Looks like a stand off between warm summery air to the southwest and yet another upper level low pressure area off the coast. I know it’s pretty far away, but if you ask me, my money’s on the upper low. Stay tuned…

Forecast for southeastern New England…

TODAY: Cloudy with areas of drizzle and a chance of showers through midday. Mostly cloudy this afternoon but breaks of sun may appear especially northeastern MA and southern NH later. Highs in the lower to middle 50s. Wind NE 10-20 MPH, becoming N.

TONIGHT: Clearing north to south. Lows upper 30s inland valleys, 40s elsewhere. Wind light N.

THURSDAY: Mostly sunny. Highs upper 50s immediate coast, 60s elsewhere. Wind light N to NE.

FRIDAY: Partly sunny. PM shower/t-storm risk. Low 55. High 70, cooler South Coast and Cape Cod.

SATURDAY: Mostly cloudy. Chance of showers south and east. Low 55. High 65.

SUNDAY: Mostly sunny. Low 55. High 75, cooler coast.

MONDAY & TUESDAY: Variably cloudy. Eventual shower threat possible. Lows 50s. Highs 70s, cooler coast.

7:45AM

Today begins a new week, or continues a long weekend, depending on how you look at it. I would like to take a moment to remember all those who have served this country. We must never forget the sacrifices made for our freedom.

I hope everybody has a safe and happy Memorial Day, regardless of your plans.

Regarding those plans, some of the early ones will be impacted by wet weather, but there is less of a chance that later ones will be, as we get a somewhat-active warm front through here this morning with showers (more around than I would have expected), and then just potentially pop up a spot thunderstorm in a few locations later today in warm and slightly unstable air. It will end up feeling like summer today. But that does not last…

The overall pattern is one of troughing in the Northeast and that will be evident this week. A disturbance helping to re-carve this trough will drop a cold front southward through New England early Tuesday and a wave of low pressure will then ride along it later Tuesday, with some wet weather. This will create a sharp drop in temperature from the briefly warm weather coming in now, and then set up a chilly northeast wind into Wednesday when lots of clouds will linger. A bit of drier air will work in Thursday with some hope for at least some sunshine, but still on the cool side. The next frontal system arrives from the west Friday when there will be a shower threat. This front pushes offshore by Saturday but upper level low pressure may delay complete clearing and allow for a chance of a few showers. Optimistically, a bubble of high pressure should provide for a decent Sunday (but at day 7, adjustments may be necessary).

Forecast for southeastern New England…

TODAY – MEMORIAL DAY: Mostly cloudy with episodes of showers during the morning. Partly sunny this afternoon with isolated showers or thunderstorms possible by late day. Highs ranging from the 60s South Coast and Cape Cod to 80-85 most interior locations. Wind W 10-20 MPH with higher gusts, especially this afternoon.

TONIGHT: Partly to mostly cloudy. Slight chance of a passing shower or t-storm early. Lows 60-65. Wind W 5-15 MPH with higher gusts.

TUESDAY: Mostly cloudy. Showers developing, especially during the afternoon hours. Highs 65-70 early, falling toward 60 inland and to the 50s coast during the afternoon. Wind W to variable around 10 MPH becoming NE to E 5-15 MPH and gusty by afternoon.

WEDNESDAY: Mostly cloudy. Low 50. High 60.

THURSDAY: Partly sunny. Low 52. High 65.

FRIDAY: Mostly cloudy. Chance of showers. Low 55. High 70.

SATURDAY: Partly sunny. Chance of showers. Low 52. High 66.

SUNDAY: Partly cloudy. Low 55. High 73.

7:45AM

Bringing things up-to-date as of Sunday morning…

Upper level low pressure centered to the east, still spinning spokes of energy southward across New England. Though this departs by Memorial Day, we remain on the northwest flow side (eastern side) of a ridge of high pressure through the early part of the coming week. Today will be somewhat similar to yesterday with lots of clouds, some sun, but a chance of pop up showers and thunderstorms. The greatest chance for activity today will be away from the coast (especially interior NH and MA) where it will be most unstable. Though we initially get into a warmer westerly flow for the holiday itself, a disturbance and frontal system over northern New England will be close enough that it may try to send a few showers and thunderstorms toward southern New England, but the majority of the area will remain dry for the holiday with most of the action to the north and a better chance of some pushing southward at night. Finally, the front to the north will push back to the south as high pressure builds in eastern Canada, and this will quickly cool it down again during Tuesday and into Wednesday. A change from the previous outlook is to allow some drier air to eliminate the chance of showers by later Tuesday and continue it rain-free on Wednesday. The end of the week will see a warm up Thursday-Friday, but Friday may end up with a round of showers and thunderstorms as another front approaches. As long as things keep moving, we’d see drier and cooler air for the final day of May next Saturday.

Southeastern New England Forecast…

TODAY: Mostly cloudy to partly sunny. Isolated to scattered afternoon showers and thunderstorms, especially away from eastern coastal areas. Any storms that form may produce small hail in isolated locations. Highs from 60 coastal areas to 70 well inland. Wind variable up to 10 MPH with sea breezes.

TONIGHT: Mostly to partly cloudy. Lingering isolated showers mainly inland areas early. Patchy fog. Lows in the 50s. Wind light variable to W.

MONDAY – MEMORIAL DAY: Partly cloudy to mostly sunny. Slight risk of isolated showers and thunderstorms in the afternoon. Highs from the 60s Cape Cod and South Coast to 80-85 much of interior MA and southern NH, 70s most of the east coastal plain. Wind W increasing to 10-20 MPH with higher gusts.

MONDAY NIGHT: Variably cloudy. Chance of showers and thunderstorms. Lows in the 60s. wind W 10-20 MPH.

TUESDAY: Mostly cloudy to partly sunny with a chance of showers during the morning. Partly to mostly cloudy in the afternoon. Highs 70-75 except 60s some coastal areas by midday then falling through the 60s all areas to upper 50s eastern coastal areas later. Wind W 10-20 MPH shifting to NE from north to south across the region.

WEDNESDAY: Partly sunny. Low 50. High 64.

THURSDAY: Partly cloudy. Low 53. High 72.

FRIDAY: Mostly cloudy. Chance of showers/thunderstorms. Low 60. High 76.

SATURDAY: Partly cloudy. Low 55. High 65.

5:40PM

We’ll have to take the good with the bad this holiday weekend. What’s good and what’s bad, you ask? I guess, using popular opinion, the bad would be the fact that upper level low pressure will take its time exiting the region and will still have an impact on southeastern New England both Saturday and Sunday, and that yet another disturbance will be on the approach by late on Memorial Day Monday. The good is the fact that some drier air will work in from the northeast and north Saturday, clearing the region at least partially, and even more so on Sunday. More of the bad is that there will be a chance of pop up showers and a thunderstorm both days, due to lingering instability from some cold air aloft. The good of this is that these will not be long-lasting or widespread. We’ll also have to be on the lookout for the disturbance moving down from the north late Monday, as conditions become somewhat more favorable for stronger storms if things come together just right.  As for the air temperature, it will start out on the cooler side of normal and then gradually warm with time, so that the warmest day will be the holiday itself. By that night, however, we may be dealing with a cold front charging down from the north. This will be dependent on the timing and positioning of the new disturbance.  This also makes the forecast beyond the holiday a little more complex as there are some unknowns. Will word the extended forecast somewhat vague and general for now and adjust as is necessary.

Have a safe and happy weekend everyone, and please remember those who have served our country to make it possible for us to do many of the things we enjoy!

Forecast for southeastern New England…

TONIGHT: Mostly cloudy. Lows around 50. Wind NE up to 10 MPH.

SATURDAY: Clouds decrease for more sun from northeast to southwest by midday. Rebuilding clouds especially interior NH and MA to northern RI afternoon with scattered showers. Highs upper 50s to lower 60s coast, middle 60s to around 70 inland. Wind NE to N 5-15 MPH.

SATURDAY NIGHT: Variably cloudy. Patchy fog interior valleys. Lows in the 50s. Wind light N.

SUNDAY: Partly sunny. Isolated afternoon showers and thunderstorms mainly away from the coast. Highs in the 70s except 60s immediate coast and Cape Cod. Wind N to NW 5-15 MPH.

SUNDAY NIGHT: Partly cloudy. Lows in the 50s. Wind NW up to 10 MPH.

MONDAY – MEMORIAL DAY: Mostly to partly sunny morning. Partly to mostly cloudy afternoon and night with a risk of showers and thunderstorms especially NH and northeastern MA. Highs in the 70s to around 80, except 60s Cape Cod. Wind NW 5-15 MPH.

TUESDAY: Mostly cloudy. Chance of showers/thunderstorms. Low 55. High 68, cooler coast.

WEDNESDAY: Mostly cloudy. Chance of rain/drizzle. Low 50. High 63, cooler coast.

THURSDAY: Partly cloudy. Low 51. High 66, cooler coast.

FRIDAY: Mostly sunny. Low 53. High 71, cooler coast.

3:37PM

An upper level low pressure area will amble its way across New England but be very sluggish in doing so, not quite wanting to get out of here until sometime over the Memorial Day Weekend, so there is going to be a shower threat in the forecast through Sunday. The good news is, by Sunday the shower risk will become minimal. Also holding out much hope for a little taste of Summer for the Memorial Holiday itself on Monday.

Looking ahead into next week, it looks warm and possibly thundery on Tuesday, and very nice at midweek as a passing cold front is followed by a bubble of high pressure.

Forecast for southeastern New England…

THROUGH EVENING: Cloudy. Periodic showers. Temperatures upper 50s coast to 60s inland. Wind E 5-15 MPH.

TONIGHT: Cloudy. Patchy fog. Occasional showers. Lows around 50. Wind E 5-15 MPH.

FRIDAY: Cloudy. Patchy fog. Occasional showers. Highs 55-62, coolest coast. Wind E 5-15 MPH.

FRIDAY NIGHT: Mostly cloudy. Patchy fog. Low 50-55. Wind light NE.

MEMORIAL DAY WEEKEND…

SATURDAY: Mostly cloudy. Chance of showers. High 60-65, cooler coast. Wind NE to N 5-15 MPH.

SUNDAY: Partly sunny. Isolated PM thunderstorms. Low 55. High 74, cooler Cape Cod.

MONDAY – MEMORIAL DAY: Partly cloudy. Low 58. High 84, cooler South Coast.

MIDDLE OF NEXT WEEK…

TUESDAY: Partly sunny. Chance of showers/thunderstorms. Low 60. High 77.

WEDNESDAY & THURSDAY: Partly cloudy. Lows in the 50s. Highs in the 70s.

2:20AM

This is an update to the previous forecast.

No significant changes to the previous discussion.

Updating the forecast for details and time periods.

TODAY: Sunny morning. Increasing clouds afternoon. Highs from near 60 coastal areas to  near 70 inland areas. Wind light variable becoming SE up to 10 MPH.

TONIGHT: Cloudy. Periods of rain late. Lows in the 50s. Wind SE to E 5-15 MPH.

THURSDAY: Cloudy. Periods of rain. Temperatures steady in the 50s, lower 60s possible well away from the coast. Wind E to NE 10-20 MPH.

FRIDAY: Mostly cloudy. Scattered showers. Low 51. High 64, cooler coast.

SATURDAY: Variably cloudy. Isolated showers. Low 50. High 68, cooler coast.

SUNDAY: Partly cloudy. Low 54. High 74.

MONDAY – MEMORIAL DAY: Mostly sunny. Low 57. High 81.

TUESDAY: Partly to mostly cloudy. Chance of showers/thunderstorms. Low 60. High 76.

3:06PM

Two low pressure areas will continue to be the dominant features for the balance of the week (through Saturday). The first one was responsible for the ribbon of heavy rain in the early hours of  Saturday, the few showers that popped up Sunday, and the more numerous showers over eastern New England Monday and Monday night. This low continues to have some influence today as the sun heating the ground has interacted with the chilly air aloft and popped more clouds. This time only isolated showers are possible, and if they occur it will be only through early evening. Most areas will not see these. This low pressure area, centered to the east of the region, finally moves away by early Wednesday but makes way for another one approaching from the west. We’ll hear from it first in the form of increasing clouds Wednesday afternoon, then some wet weather Wednesday night through Friday (not raining the entire time), and cool air, especially Thursday. This is a little different than how the current low has impacted the region, but moving away Saturday it will be somewhat similar to its cousin, with a few instability showers possible to start the Memorial Day Weekend. But as we get to the  middle and end of the holiday weekend, Sunday and Memorial Day Monday look much better, and warmer, as a westerly flow takes over.

Updated forecast for southeastern New England…

THROUGH EVENING: Partly cloudy. Isolated showers possible especially coastal NH and eastern MA. Temperatures start out middle 60s to lower 70s cooling to upper 50s to lower 60s. Wind light N to NE.

TONIGHT: Mostly clear. Lows middle 40s inland valleys to middle 50s shoreline and urban centers. Wind light variable.

WEDNESDAY: Sunny morning. Increasing clouds afternoon. Highs from near 60 coastal areas to  near 70 inland areas. Wind light variable becoming SE up to 10 MPH.

WEDNESDAY NIGHT: Cloudy. Periods of rain developing. Lows in the 50s. Wind SE to E 5-15 MPH.

THURSDAY: Cloudy. Periods of rain. Temperatures steady in the 50s. Wind E to NE 10-20 MPH.

FRIDAY: Mostly cloudy. Scattered showers. Low 51. High 64.

SATURDAY: Variably cloudy. Isolated showers. Low 50. High 68.

SUNDAY: Partly cloudy. Low 54. High 74.

MONDAY – MEMORIAL DAY: Mostly sunny. Low 57. High 81.

7:53PM

Oh, Summer must be coming, because it’s an 8-day week ahead post! That means that a long weekend looms, and indeed it does – the first weekend of the Summer for many, the start of the tourist season, otherwise known as Memorial Day Weekend. Of course, we should not and will not forget the meaning of the holiday itself, which actually falls on May 30 but is celebrated on the last Monday of May. And on that day and every day we should remember all of those who have served our country. In this post, we’ll take a look all the way out through Memorial Day (May 26).

The Work Week: It’ll be a “low pressure work week”, maybe not in your job, but in the weather. The weather will be governed by 2 low pressure areas, one that sits and spins just to the east of New England with an upper extension over the region Monday and Tuesday, and that one getting out of the way for a second low pressure area that arrives from the west late Wednesday and hangs on through Friday. The first low will provide instability that will bring the chance of showers and a few thunderstorms both Monday and Tuesday. Widespread rains are not expected, but anybody could get wet at times especially Monday afternoon and a couple more times on Tuesday. Some places may escape much of the shower activity as it will be somewhat hit and miss. The second low will bring periods of rain as early as Wednesday night and lingering Thursday and Friday. Its exact position will determine how often rain occurs and how widespread it is, but it looks right now like the second system will deliver more widespread rain, though not particularly heavy, for the end of the work week.

The Long Weekend: It’s a long way off, from a forecasting standpoint, but the early call is that low pressure will continue to bother the region on Saturday, with a continued chance of some wet weather. With some luck it will be pulling off to the east with slow improvement. It is starting to look like a more westerly flow will bring drier and warmer weather for Sunday and Monday – something that will be monitored as the week goes on.

Forecast for southeastern New England…

TONIGHT: Decreasing clouds. Lows in the 40s to lower 50s, mildest along the coast and in urban centers. Wind NW 5-15 MPH.

MONDAY: Clouds redevelop. Scattered showers and possible thunderstorms in the afternoon. Any thunderstorms that occur could produce small hail. Highs in the 60s. Wind NW to N 10-20 MPH.

MONDAY NIGHT: Mostly cloudy. Scattered showers. Lows 50-55. Wind N 5-15 MPH.

TUESDAY: Variably cloudy. Chance of additional showers. Highs in the 60s. Wind N 5-15 MPH.

WEDNESDAY: Sun to start, clouds to finish, possibly turning wet at night. Low 50. High 65.

THURSDAY AND FRIDAY: Cloudy with periods of rain. Lows 50-55. Highs 55-60.

SATURDAY: Mostly cloudy. Chance of showers. Low 50. High 60.

SUNDAY: Partly cloudy. Low 55. High 70.

MONDAY – MEMORIAL DAY: Mostly sunny. Low 55. High 80.

3:30AM

Don’t cancel your outdoor plans unless they are first thing Saturday morning in southeastern New England. Things are moving along and we salvage better than 75% of Saturday for much of the region, and it will turn out to be a beautiful day, as a ribbon of rain and embedded thunderstorms starts the day out especially eastern MA, southeastern NH, and RI, before it all shifts eastward offshore (lastly to depart Cape Cod), and midday/afternoon turn out wonderful – drying air, lots of sun, and mild!

Even  Sunday does not look terrible, though with some cooler air arriving aloft, the atmosphere will be a little more unstable, and a boundary may set up over eastern MA, RI, and southeastern NH during the day, with onshore wind battling a land breeze. This will lead to some developing clouds and possible pop up showers. But overall, the day does not look terrible.

Upper level low pressure centered east of the region Monday-Tuesday will keep it a little unsettled but we are not looking at all out rainy weather, just a risk of pop up showers both days. Things will likely move eastward  in the atmosphere by midweek so a new system from the west pushes in later Wednesday into late week with a better chance of more widespread showery weather.

Forecast for southeastern New England…

TODAY: Starts cloudy with rain and embedded thunderstorms ending west to east by mid morning, then clearing from west to east later morning through midday for a sunnier afternoon. Drying. Highs 60s Cape Cod and South Coast, 70s elsewhere. Wind W 10-20 MPH.

TONIGHT: Mostly clear. Lows upper 40s inland valleys to middle 50s urban centers and immediate coast. Wind light NW.

SUNDAY: Sunny into late morning. Becoming partly sunny midday and afternoon with isolated to scattered showers especially southeastern NH, eastern MA, and northern RI. Wind variable 5-15 MPH tending to be E near the East Coast and N elsewhere.

MONDAY & TUESDAY: Variably cloudy. Scattered mainly PM showers. Lows near 50. Highs in the 60s.

WEDNESDAY: Partly sunny to mostly cloudy. Chance of showers or light rain late day. Low 50. High 65.

THURSDAY & FRIDAY: Mostly cloudy. Periods of rain or showers. Lows around 50. Highs in the 60s.

6:42AM

The Thin Line: A warmer, humid southerly flow has overtaken southeastern New England and is being announced by extensive low cloudiness that has invaded the region in the pre-dawn hours. This is ahead of a cold front which will be moving very slowly across the Northeast during the next few days, through Saturday. A ribbon of rain in a fairly thin line will accompany this front but will probably not get into this area until Friday night and Saturday, so leading up to that will be lots of clouds, but also times of less cloudiness (this afternoon and evening and possibly again at times Friday especially eastern areas). It will also be on the warm and humid side, except cooler along the South Coast where winds come across cooler ocean waters.

The Wide Swirl: Broad upper level low pressure drifting southeastward from the Great Lakes will cross New England then sit and spin just south and east of the region from the end of the weekend into the middle of next week. This spells an unsettled and somewhat cooler pattern. Though it does not look like days on end of rain, it does look like there will be a risk of shower activity each of the days.

Forecast for southeastern New England…

TODAY: Mostly cloudy to partly sunny, some areas may turn mostly sunny at times later. Highs 60s South Coast, 70s elsewhere. More humid. Wind S 5-15 MPH.

TONIGHT: Partly cloudy evening. Mostly cloudy overnight. Patchy fog. Lows near 60.  Humid. Wind S 5-15 MPH.

FRIDAY: Mostly cloudy, still some intervals of sun possible. Slight chance of a shower. Highs 60s South Coast, 70s elsewhere. Humid. Wind S 10-20 MPH.

FRIDAY NIGHT: Cloudy. Showers and possible thunderstorms arriving from west to east. Humid. Lows around 60. Wind S to SE 10-20 MPH and gusty.

SATURDAY: Cloudy. Showers and possible thunderstorms with locally heavy rain traversing the area west to east in the morning then periodic lighter showers thereafter. Humid. Highs in the 60s. Wind SE to S 10-20 MPH.

SUNDAY THROUGH WEDNESDAY: Variably cloudy. A daily risk of showers. Isolated thunderstorms possible. Lows in the 50s. Highs in the 60s, some upper 50s coast.

4:27PM

Spring is the most volatile season in New England. The mix and battle of lingering cold ocean water, strong sunshine heating the land, lingering pockets of cold air aloft, moist ocean winds, drier west winds, post-script Winter air masses still sneaking in from Canada at times, and the first pushes of early Summer heat trying to invade from the south all combine to result in a variety of weather. Sometimes things move along, and sometimes they bog down when the pattern blocks up, and we can be caught on the good weather side, or the bad weather side of a stubborn pattern. Basically anything can happen here in the Spring. We already saw a drastic change between Monday and Tuesday, with Summertime warmth being replaced by ocean chill across southeastern New England courtesy a back-door cold front. The impact of course was greater near the coast, though even areas that held onto some sun were considerably cooler Tuesday than on Monday.

The next couple days will feature a turning of wind from east to south, increasing humidity, and a battle between a high pressure ridge center along and off the East Coast with an approaching low pressure trough from the west. It will take a few days for the trough to finally push eastward far enough to bring its ribbon of wet weather into this area. It should finally do so by late Friday, lingering into if not through most of Saturday. Then, as is often the case in  Spring, things look like they will want to bog down and an upper level low pressure area will evolve nearby, keeping the weather on the unsettled side into early next week.

Forecast for southeastern New England…

TONIGHT: Mostly cloudy. Lows upper 40s to lower 50s. Wind E 5-15 MPH.

WEDNESDAY: Mostly cloudy to partly sunny. Highs middle 50s coast to 60s inland. Wind SE 5-15 MPH.

WEDNESDAY NIGHT: Partly to mostly cloudy. Lows 50-55. Wind SE to S 5-15 MPH.

THURSDAY: Intervals of clouds and sun. Highs 60s South Coast, 70s elsewhere. Wind S 10-20 MPH and gusty.

FRIDAY: Mostly cloudy. Isolated to scattered showers daytime, more numerous at night. Low 60. High 72.

SATURDAY: Cloudy. Showers likely. Chance of thunderstorms. Low 61. High 68.

SUNDAY: Mostly cloudy. Scattered showers. Low 55. High 65.

MONDAY: Variably cloudy. Chance of showers. Low 53. High 64, cooler coast.

TUESDAY: Variably cloudy. Chance of showers. Low 52. High 65, cooler coast.

7:38AM

Forecast update. Full discussion this afternoon.

TODAY: Mostly cloudy. Isolated showers. Highs in the 50s, around 60 interior MA. Wind E 5-15 MPH.

TONIGHT: Mostly cloudy. Lows around 50. Wind light SE.

WEDNESDAY: Mostly cloudy. Highs in the 60s, some upper 50s coast. Wind SE 5-15 MPH.

THURSDAY: Partly sunny. Low 55. High 75.

FRIDAY: Mostly cloudy. PM showers. Low 55. High 70.

SATURDAY: Mostly cloudy. Showers likely. Low 55. High 65.

SUNDAY: Variably cloudy. Chance of showers. Low 50. High 62.

MONDAY: Variably cloudy. Chance of showers. Low 50. High 62.

12:25PM

Fantastic Mother’s Day in progress, and I’d like to wish all moms a Happy Mother’s Day! A nice dry and mild westerly wind makes this day great, the only real drawback being a high tree pollen count.

For the week coming up, many changes in store, from a Summer preview to a return to ocean chill to an increase in humidity then a turn to wetter weather. I believe it plays out like this:

Southwesterly flow as high pressure slips offshore Monday, bringing warmth and increasing humidity. While one cold front approaches from the west, a back-door cold front will be charging down from the north northeast and will enter the region at night as high pressure builds across eastern Canada. This will bring in a much cooler northeast wind by Tuesday, which may be as much as 30 degrees cooler than Monday in some areas. When we get to midweek (Wednesday-Thursday, the wind will start to turn more to the south, transporting warmer and more humid air back into the region. But as this takes place, the atmosphere is going to begin to develop a block, so that when a trough of low pressure arrives on the East Coast at the end of the week it will likely cut off and get stuck for a while, and we in southeastern New England will probably end up on the unsettled side of it. It remains to be seen how this will play out exactly and the forecast will be fine tuned as the week goes on.

THIS AFTERNOON: Sunny. Highs in the 70s, cooler some coastal areas. Wind W 5-15 MPH, few higher gusts.

TONIGHT: Partly cloudy. Lows in the 50s. Wind SW 5-15 MPH.

MONDAY: Partly cloudy. Highs upper 60s South Coast to lower 80s interior MA and southern NH. Wind SW 10-20 MPH.

MONDAY NIGHT: Mostly cloudy with a chance of showers and thunderstorms evening. Cloudy with patchy fog and drizzle overnight. Lows around 50. Wind SW 5-15 MPH early, shifting to NE 10-15 MPH from northeast to southwest across the region overnight.

TUESDAY: Cloudy. Patchy drizzle. Highs 50-55 except 55-60 interior MA. Wind NE 10-20 MPH.

WEDNESDAY: Partly sunny. Low 50. High 65, cooler coastal areas.

THURSDAY: Partly cloudy. Low 55. High 70, cooler South Coast.

FRIDAY THROUGH SUNDAY: Cloudy. Chance of rain. Lows in the 50s. Highs in the 60s.

6:08PM

Clouds dominated Friday, along with some areas of fog, drizzle, and a few showers. This is because warm air from the southwest is overrunning cooler air at the surface. In southeastern New England, we’ve been on this cooler side of a boundary for a few days, and as is typical in Springtime, chilly ocean water and northwesterly upper level winds combine to keep the warm air from making a big push into the region. The funny thing is, we will see the warm front finally push through Saturday, but plentiful low level moisture may never allow for complete clearing. What we will have to wait for will be a cold front that will sweep everything offshore and introduce drier air for Sunday – Mother’s Day. But alas, the air behind this “cold” front is really not cold, so Sunday looks like a stunning day with lots of sunshine and fairly warm air (except for some coastal locations which will be impacted by the adjacent chilly ocean water).

Looking ahead a little, next week starts with a preview of Summer on Monday as we briefly get into a southwest flow with more humid air. But it is not likely to last, as a boundary to the north pushes southward, aided by high pressure building over eastern Canada. This boundary will come through from northeast to southwest as back-door cold front by early Tuesday, making the middle few days of next work week on the grey and cooler side and pushing the summery air away for a while.

Detailed forecast for southeastern New England…

TONIGHT: Cloudy. Areas of fog and drizzle. Slight chance of showers before midnight. Scattered showers and isolated thunderstorms after midnight. Lows in the 50s. Wind shifting E to SE around 10 MPH.

SATURDAY: Mostly cloudy. Chance of showers and thunderstorms in the morning, little activity in the afternoon, and a chance of additional showers and thunderstorms evening. Highs from near 60 South Coast to the 70s interior eastern MA and southern NH areas. Wind SE shifting to SW and increasing to 10-20 MPH with higher gusts.

SATURDAY NIGHT: Mostly cloudy with lingering showers early followed by clearing later. Lows in the 50s. Wind SW shifting to W 10-20 MPH then diminishing.

SUNDAY – MOTHER’S DAY: Mostly sunny. Highs 60s immediate coast, 70s most locations, may touch 80 interior valleys. Wind W 10-20 MPH.

MONDAY: Partly cloudy. Scattered showers/thunderstorms late afternoon into the night. Low 60. High 81.

TUESDAY: Mostly cloudy. Chance of drizzle. Low 50. High 60, cooler coast.

WEDNESDAY: Mostly cloudy. Low 48. High 60, cooler coast.

THURSDAY: Mostly cloudy. Low 51. High 65, cooler coast.

FRIDAY: Mostly cloudy. Chance of showers. Low 52. High 64.