A simple Sunday forecast as high pressure brings fair and mild weather. Next, a broad trough of low pressure crosses the region from west to east Monday and Tuesday, bringing unsettled weather in the form of 2 main batches of rain, one Monday afternoon and a second one early Tuesday. This trough lifts out gradually but delivers a shot of cool, dry air for the middle of the coming week as high pressure builds back in at the surface.

TODAY: Sun, giving way to more clouds late. Highs 63-70. Wind SW 5-15 MPH.

TONIGHT: Clouding over. Lows 51-58. Wind S 5-15 MPH.

MONDAY: Cloudy. Rain likely, especially during the afternoon. Highs 58-65. Wind SE 5-15 MPH, higher gusts possible.

MONDAY NIGHT: Cloudy. Areas of fog. Rain showers arrive overnight. Lows 47-54. Wind SE to S up to 15 MPH.

TUESDAY: Cloudy start with widespread rain showers, then a sun/cloud mix midday on. Highs 55-62. Wind SW 5-15 MPH.

TUESDAY NIGHT: Mostly clear. Lows 33-40. Wind W up to 10 MPH.

WEDNESDAY: Mostly sunny. Highs 53-60. Wind W 5-15 MPH.

WEDNESDAY NIGHT: Mostly clear. Lows 35-42.Wind W 5-15 MPH.

THURSDAY: Mostly sunny. Highs 53-60. Wind W 5-15 MPH.

DAYS 6-10 (OCTOBER 21-25)

Mean trough position stays to the west for this period with surface high pressure in control here providing fair weather and moderating temperatures, but we’ll still need to watch low pressure to the south later in the period. Right now the medium range guidance trends are to keep this system south of the region, but that’s not a certainty at this point.

DAYS 11-15 (OCTOBER 26-30)

No big changes in the pattern with the mean trough position oscillating between the Great Lakes / Upper Midwest and the Northeast. We should end up with one brief unsettled episode around a mid period air mass change, but it’s too soon for more precise timing and details.

C-19 Chat Post – 10-16-2022

Early this morning there are some “after-effects” of the weather system that went through yesterday. We have patchy stratus and fog both near the NH Seacoast and in interior valley locations, while a plume of high clouds behind the offshore frontal system crosses Cape Cod and the Islands. All of these are temporary and we’ll end up with a day of abundant sun and mild air as high pressure dominates the region. A weak and nearly dissipated cold front will cross the region from west to east tonight, but it will hardly be noticeable other than maybe any given location being 1 or 2 degrees cooler for a high temp on Sunday – another day dominated by high pressure with fair weather. You will notice though an increase in the high cloudiness later in the day, this being in advance of our next unsettled weather system. This system will be rotating around a low pressure trough to our west, and will bring a period of showers and rain to the region Monday, especially during the afternoon and night, before it exits the region on Tuesday. With the trough nudging eastward, we’ll have an indirect delivery of much cooler air later Tuesday and Wednesday, along with dry weather conditions.

TODAY: Limited sun early to mid morning Cape Cod, patchy clouds NH Seacoast and patchy fog and low clouds interior valleys early, then sunny. Highs 65-72. Wind SW up to 10 MPH.

TONIGHT: A few clouds pass by. Lows 45-52. Wind SW-W up to 10 MPH.

SUNDAY: Sunshine, becoming filtered later in the day. Highs 63-70. Wind SW 5-15 MPH.

SUNDAY NIGHT: Clouding over. Lows 51-58. Wind S 5-15 MPH.

MONDAY: Cloudy. Rain likely, especially during the afternoon. Highs 58-65. Wind SE 5-15 MPH, higher gusts possible.

MONDAY NIGHT: Cloudy with rain likely evening and a chance of rain showers overnight. Areas of fog. Lows 47-54. Wind SE to S up to 15 MPH.

TUESDAY: Lots of clouds with an early rain shower chance, then a sun/cloud mix. Highs 55-62. Wind SW 5-15 MPH.

TUESDAY NIGHT: Mostly clear. Lows 33-40. Wind W up to 10 MPH.

WEDNESDAY: Mostly sunny. Highs 53-60. Wind W 5-15 MPH.

DAYS 6-10 (OCTOBER 20-24)

Mean trough position stays to the west for this period with surface high pressure in control here providing fair weather, below normal temperatures to start then a moderating trend. By the end of the period we may need to watch low pressure getting closer to our area from the south.

DAYS 11-15 (OCTOBER 25-29)

The greatest chance for unsettled weather comes at the start of the period pending the position of low pressure to the south and the expecting timing of a disturbance moving through from the west. A trough from the west and a stronger push of cooler / colder air from Canada may be ours later in the period.

C-19 Chat Post – 10-15-2022

A wave of low pressure has moved by us overnight as a cold front slowly approached, helping to enhance a fairly healthy rainfall event for most of the region, which will help to further reduce the drought. The final push of showers will move through this morning from west to east, including an additional downpour with possible gusty winds for a brief period of time. Behind this, we’ll dry out with breaking clouds, more sun, and a gusty breeze, although it will be a mild day and even a bit on the relatively humid side for several hours before drier air arrives from the west and southwest. So improvement does come and sets us up for a fairly nice weekend. The guaranteed nicest day is Saturday with lots of sun, a few clouds, and mild air with a west to southwest breeze at modest speeds. On Sunday we still may see some additional cloudiness in advance of another low pressure trough, but I’m pretty confident any rain showers stay away and it’s another nice day. Things change quickly later Sunday night and Monday as a frontal system, first warm front, then eventually slow moving cold front, brings rainfall back to the region during Monday (steadiest rainfall likely in the afternoon / evening) and lingering into Tuesday (in the form of showers). Still have to fine-tune that bout of unsettled weather for the forecast and will do so over the next few days…

TODAY: Cloudy with rain showers including some downpours ending from west to east later this morning except lingering near the MA East Coast and NH Seacoast into early afternoon and Cape Cod until about mid afternoon. Clouds break for sun southwest to northeast midday and afternoon. Highs 65-72. Wind S 5-15 MPH, higher gusts, shifting to SW.

TONIGHT: Partly cloudy evening. Mostly clear overnight. Patchy fog forming in lower elevations. Lows 47-54. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 63-70. Wind WSW up to 10 MPH.

SATURDAY NIGHT: Partly cloudy. Lows 43-50. Wind SW under 10 MPH.

SUNDAY: Partly sunny. Highs 63-70. Wind SW 5-15 MPH.

SUNDAY NIGHT: Clouding over. Lows 51-58. Wind S 5-15 MPH.

MONDAY: Cloudy. Rain likely, especially during the afternoon. Highs 60-67. Wind SE 5-15 MPH, higher gusts possible.

MONDAY NIGHT: Cloudy with rain likely evening and a chance of rain showers overnight. Areas of fog. Lows 50-57. Wind SE to S up to 15 MPH.

TUESDAY: Mostly to variably cloudy with a good chance of rain showers. Highs 61-68. Wind S to SW 5-15 MPH with higher gusts.

DAYS 6-10 (OCTOBER 19-23)

Progression of a trough of low pressure to the east brings drier but much cooler air to the region during the middle of next week with continued mainly dry weather and slight temperature moderation toward the end of the period including the October 22-23 weekend.

DAYS 11-15 (OCTOBER 24-28)

The mean trough position stays in the Great Lakes to Northeast into late month. Early in this period it should be far enough west to allow additional unsettled weather including a potential significant rain event. Later on it should shift east with an early season shot of cold potentially arriving here – maybe even initiating the first snow showers of the season for at least some areas, or at least nearby.

C-19 Chat Post – 10-14-2022

A low pressure trough traversing the region from west to east through Friday will bring us a period of unsettled weather. If you step outside this morning you’ll already notice there has been a spike in humidity as a warm front passed the region during the early morning hours, boosting dew points. We’ll have a healthy southerly air flow in this warm air mass today and as the upper pattern pushes a surface cold front slowly into and across the region later today through the first half to two thirds of Friday, we’ll have an increase in rain shower activity, becoming most widespread tonight and early Friday when there can be downpours and even some thunder. A little low pressure area forming on the frontal boundary may delay its departure for a few hours during the day on Friday, but it looks like all of the rainfall should be offshore by mid afternoon, exiting Cape Cod lastly. In will flow drier air behind that for the upcoming weekend, but it will be a mild weekend as we maintain a southwesterly air flow both at the surface and aloft. Look for the sunniest day of the two weekend days Saturday. Sunday may feature more cloud cover at times as a disturbance approaches. For now, I am keeping that day’s forecast rain-free, although some guidance has hinted at the chance for some shower activity before the day is over, especially to the west, so this will be something to keep an eye on. Unsettled weather more certainly returns early next week as another trough and frontal system approach and move in from the west…

TODAY: Mostly cloudy with intervals of sun during this morning. Generally overcast with an increased chance for showers southwest to northeast this afternoon. Highs 65-72. Dew point 60+. Wind S 10-20 MPH, higher gusts.

TONIGHT: Cloudy. Widespread showers, some likely heavy. Chance of thunderstorms. Lows 55-62. Wind S 5-15 MPH, higher gusts, above 20 MPH.

FRIDAY: Cloudy with rain showers including some downpours ending from west to east in the morning except lingering near the MA East Coast and NH Seacoast into early afternoon and Cape Cod until about mid afternoon. Clouds break for sun west to east midday and afternoon. Highs 65-72. Wind S 5-15 MPH, higher gusts, shifting to SW.

FRIDAY NIGHT: Mostly clear. Lows 44-51. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 63-70. Wind WSW up to 10 MPH.

SATURDAY NIGHT: Partly cloudy. Lows 43-50. Wind SW under 10 MPH.

SUNDAY: Partly sunny. Highs 63-70. Wind SW 5-15 MPH.

SUNDAY NIGHT: Clouding over. Lows 51-58. Wind S 5-15 MPH.

MONDAY: Cloudy. Rain showers likely, especially during the afternoon. Highs 60-67. Wind S 5-15 MPH, higher gusts.

DAYS 6-10 (OCTOBER 18-22)

Low pressure trough overhead brings cooler air but still a rain shower chance October 18 then departs with dry/cool weather following that, until a moderating trend in temperature later in the period.

DAYS 11-15 (OCTOBER 23-27)

Progressive pattern but with the mean trough position Great Lakes to Northeast on the larger scale. This does mean a couple precipitation threats exist, but no long-lasting unsettled weather. Temperatures near to below normal.

C-19 Chat Post – 10-13-2022

High pressure shifts offshore today with another fair weather day for us. After a cool start like yesterday, we turn mild again, but this time you’ll notice more of a breeze than we had yesterday when we had high pressure overhead. Now we’re in the region between the high and an approaching low pressure area from the west, which helps create more wind. Our run of nice days will come to an end Thursday as the trough from the west moves in, and its accompanying frontal system triggers showers which will move into the region by later in the day. The wet weather likely is most widespread at night into early Friday, when some downpours may occur, along with some gusty winds. We have to watch for a thin squall line which may be embedded in a larger area of widespread showers and rainfall too. Everything pushes offshore during Friday behind a wave of low pressure that forms on the frontal boundary but moves by quickly. Some guidance prolongs rainfall over Cape Cod and even far eastern MA into early Saturday but I am not buying into this scenario. Looks like a mainly fair weather weekend with narrow high pressure shifting through the region then offshore, and with the mean trough position still to the west, the upper and surface flow is mainly southwest, meaning a milder weekend than the previous one.

TODAY: Mostly sunny. Highs Highs 61-68. Wind SSW 5-15 MPH.

TONIGHT: Partly cloudy. Lows 48-55. Wind SSW 5-15 MPH.

THURSDAY: Mostly cloudy. Shower chances increase from west to east. Highs 62-69. Wind S 10-20 MPH, higher gusts especially by late in the day.

THURSDAY NIGHT: Cloudy. Widespread showers, some possibly heavy. Chance of thunderstorms. Lows 55-62. Wind S 5-15 MPH, higher gusts, above 20 MPH.

FRIDAY: Cloudy with rain showers ending from west to east in the morning. Clouds break for sun in the afternoon but passing rain showers still possible, and more widespread showers may continue over Cape Cod. Highs 63-70. Wind S 5-15 MPH, higher gusts, shifting to SW.

FRIDAY NIGHT: Mostly clear. Lows 44-51. Wind SW up to 10 MPH.

SATURDAY: Mostly sunny. Highs 63-70. Wind SW up to 10 MPH.

SATURDAY NIGHT: Partly cloudy. Lows 43-50. Wind SW under 10 MPH.

SUNDAY: Partly sunny. Highs 63-70. Wind SW 5-15 MPH.

DAYS 6-10 (OCTOBER 17-21)

The first few days of this period will be dominated by a trough of low pressure drifting eastward through the region with unsettled weather and a cooling trend – details to be ironed out in the days ahead. Fair, seasonably cool weather should be with us for later in the period behind this system.

DAYS 11-15 (OCTOBER 22-26)

No big changes here. The large scale pattern keeps the general trough position in the Great Lakes and Northeast, a bit drier with variable temperatures averaging fairly close to normal.

C-19 Chat Post – 10-12-2022

Late-day showers especially north and west of Boston provided enough ground moisture for areas of fog overnight and early this morning, but that will dissipate soon with the sun rising into the sky. High pressure builds into the region today then shifts to the south and east Wednesday. This provides fair weather, cool mornings, and milder afternoons both days. A fairly amplified trough of low pressure will be approaching from the west during this time and then will move across our region later Thursday through Friday. An associated surface frontal boundary will bring a swath of showers to the region later Thursday into Friday, maybe coming in a couple waves. Fair weather returns later Friday as a developing low pressure area on the boundary pulls the front more quickly to the east at that time. This sets up a nice start to the weekend as high pressure builds in from the west.

TODAY: Early fog patches especially in Boston’s northern and western suburbs, otherwise mostly sunny. Highs 59-66. Wind calm early, then SW up to 10 MPH.

TONIGHT: Mostly clear. Lows 44-51. Wind SW up to 10 MPH.

WEDNESDAY: Mostly sunny. Highs Highs 61-68. Wind SSW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 48-55. Wind SSW 5-15 MPH.

THURSDAY: Mostly cloudy. Shower chances increase from west to east. Highs 60-67. Wind S 10-20 MPH, higher gusts especially by late in the day.

THURSDAY NIGHT: Cloudy. Widespread showers, some possibly heavy. Chance of thunderstorms. Lows 53-60. Wind S 5-15 MPH, higher gusts, above 20 MPH.

FRIDAY: Cloudy with showers ending from west to east in the morning. Clearing in the afternoon. Highs 62-69. Wind S 5-15 MPH, higher gusts, shifting to W.

FRIDAY NIGHT: Mostly clear. Lows 38-45. Wind W up to 10 MPH.

SATURDAY: Mostly sunny. Highs 60-67. Wind W up to 10 MPH.

DAYS 6-10 (OCTOBER 16-20)

October 16 should see dry weather to round out the weekend but we may end up with more clouds at least in advance of another trough heading this way. This trough brings a shower chance early next week followed by fair but cooler weather by the middle of next week.

DAYS 11-15 (OCTOBER 21-25)

Large scale pattern keeps the general trough position in the Great Lakes and Northeast, not amplified enough for much rainfall, but allowing for additional deliveries of cool autumn air with 1 or 2 brief precipitation threats.

C-19 Chat Post – 10-11-2022

A disturbance and old frontal boundary will cross the region from west to east today with abundant cloud cover, but only a limited shower chance, confined mainly to the afternoon hours and northwest of Boston. High pressure builds in tonight and Tuesday then shifts offshore by midweek. This brings fair weather and eventually a slight warming trend. Our nice weather will be put to an end later in the week as a trough and frontal boundary approach from the west bringing showers to the region, some possibly heavy, later Thursday into Friday, before pushing offshore later Friday.

TODAY: Lots of clouds / limited sun. A brief rain shower possible mainly west and north of Boston during the afternoon. Highs 57-64. Wind W 5-15 MPH.

TONIGHT: Clearing. Lows 40-47. Wind SW up to 10 MPH.

TUESDAY: Mostly sunny. Highs 59-66. Wind SW 5-15 MPH.

TUESDAY NIGHT: Mostly clear. Lows 44-51. Wind SW 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs Highs 61-68. Wind SW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 48-55. Wind SW 5-15 MPH.

THURSDAY: Mostly cloudy. Shower chances increase from west to east. Highs 60-67. Wind S 10-20 MPH.

THURSDAY NIGHT: Cloudy. Widespread showers, some possibly heavy. Chance of thunderstorms. Lows 53-60. Wind S 5-15 MPH, higher gusts.

FRIDAY: Cloudy with showers ending from west to east in the morning. Clearing in the afternoon. . Highs 60-67. Wind W 5-15 MPH, higher gusts.

DAYS 6-10 (OCTOBER 15-19)

Upper pattern features trough of low pressure to the west and high pressure at the surface to just offshore during the October 15-16 weekend. This leads to a fair, seasonable weekend, not quite as cool as the preceding one, and quite nice for any autumn outdoor activities both days. The trough to the west is expected to edge eastward and bring some unsettled weather at times during the October 17-19 period, but definitely not 3 days of solid rainfall – just chances of rain showers from time to time and a cool-down.

DAYS 11-15 (OCTOBER 20-24)

As low pressure departs the region but the mean trough position still from the Great Lakes to Northeast, expecting mainly dry weather with 1 or 2 brief precipitation threats, and temperatures near to below normal.

C-19 Chat Post – 10-10-2022

After a showery very early morning Saturday in far southeastern New England, we’ve been enjoying a nice weekend so far, and despite a very chilly start today we have another nice day coming up for today as well. You’ll notice some patchy clouds crossing the sky from west to east, favoring areas to the north and west of Boston first and a bit further southeast later. This is a result of a weakening / dissipating secondary frontal boundary that is doing nothing much than slightly reinforcing the cool, dry air we have here. You will hardly notice it other than the cloud patches and a bit more wind today than we had yesterday as the atmosphere mixes up with the sun’s heating. So this is the type of day you need careful placement of your wind-sensitive yard sale items or maybe to zip your jacket on your walk. 🙂 A disturbance and old frontal boundary cross the region from west to east Monday with more clouds and only a small chance of a few brief rain showers. After that, nice weather returns as high pressure builds in then shifts offshore and we see moderating temperatures, especially by midweek. While we stay mild for Thursday, that is the day that our unsettled weather chances increase significantly – this as a frontal boundary pushes this way from the west in association with a more amplified trough of low pressure moving in this direction via the Great Lakes and Midwest. We will likely see showers before Thursday ends.

TODAY: Sun and patchy clouds. Highs 55-62. Wind W 5-15 MPH, gusts 20-25 MPH.

TONIGHT: Clearing, then clouds return pre-dawn. Lows 37-44. Wind NW 5-15 MPH.

MONDAY: Mostly cloudy. A brief rain shower possible afternoon mainly west and north of Boston. Highs 57-64. Wind W 5-15 MPH.

MONDAY NIGHT: Clearing. Lows 40-47. Wind SW up to 10 MPH.

TUESDAY: Mostly sunny. Highs 59-66. Wind SW 5-15 MPH.

TUESDAY NIGHT: Mostly clear. Lows 44-51. Wind SW 5-15 MPH.

WEDNESDAY: Mostly sunny. Highs Highs 61-68. Wind SW 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 48-55. Wind SW 5-15 MPH.

THURSDAY: Mostly cloudy. Shower chances increase from west to east. Highs 60-67. Wind S 10-20 MPH.

DAYS 6-10 (OCTOBER 14-18)

While models differ a little on timing of exit of wet weather with frontal passage, going with a wet start and dry finish for October 14 as the front pushes offshore, then a narrow but slower moving high pressure area moving in for dry and seasonable to mild weather for the October 15-16 weekend. This time I don’t think we get as strong a cool push due to the orientation of the upper pattern not allowing a more direct delivery of polar air. That trough to the west will also help initiate another unsettled weather threat in our region during the October 17-18 time frame as well, although it’s too early for details on timing.

DAYS 11-15 (OCTOBER 19-23)

As low pressure departs the region but the mean trough position still from the Great Lakes to Northeast, expecting mainly dry weather with 1 or 2 brief precipitation threats, and temperatures near to below normal.