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.

7:32AM

Warm front takes the next 2 days to push across the Northeast. No big changes to previous forecast except to slow down the timing a little bit and keep clouds and a shower threat longer into Saturday from the warm front. Sunday looks like the pick of the weekend – a great Mother’s Day. Taste of Summer early next week before we go the other way again as a trough from the west pushes a ridge along the East Coast out of the way.

Forecast for southeastern New England…

TODAY: Sun filtered at times by high clouds then blotted out at times by middle clouds to the west late. Highs 60s, upper 50s coast. Wind light SE.

TONIGHT: Increasing clouds. Lows around 50. Wind light SE.

FRIDAY: Mostly cloudy. Chance of showers. Highs upper 50s to lower 60s. Wind SE 5-15 MPH.

SATURDAY: Mostly cloudy. Chance of showers. Low 53. High 72.

SUNDAY – MOTHER’S DAY: Partly cloudy. Low 55. High 76.

MONDAY: Partly sunny. Chance of showers/thunderstorms at night. Low 58. High 80.

TUESDAY: Variably cloudy. Chance of showers. Low 50. High 70.

WEDNESDAY: Partly cloudy. Low 51. High 68.

10:11PM

For the next 3 days, we’ll be on the cool side of the jet stream while a front sets up to the southwest of New England, at first far enough away to cause only occasional high cloudiness, eventually close enough to bring heavier clouds and a chance of some wet weather.

Then it looks like we’ll be in for at least 3 days on the warmer side of the jet stream as the warm front lifts through by early Saturday. As high pressure ridging in the upper levels presses eastward toward the East Coast, it will be hard to pull any chilly air back into the region from Canada, so a cold front passing by Saturday night will not have much of an impact other than to bring the chance of showers and thunderstorms. This may repeat again by later Monday, with fairly mild air likely to hang on even through Tuesday when another cold front has pushed through.

Forecast for southeastern New England…

OVERNIGHT: Clear. Lows ranging from the middle 30s in interior valleys to 40s elsewhere. Wind light NW.

WEDNESDAY: Mostly sunny but sun may be filtered at times by some high cloudiness. Highs in the 60s except holding in the 50s at the coast. Wind SE 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows in the 40s. Wind light SE.

THURSDAY: Sunshine filtered at times by variable high clouds. Highs in the 60s, again cooler coast. Wind SE 5-15 MPH.

FRIDAY: Mostly cloudy. Chance of light rain. Low 47. High 57.

SATURDAY: Partly sunny. Chance of showers and thunderstorms at night. Low 50. High 76.

SUNDAY: Partly cloudy. Low 55. High 74.

MONDAY: Partly cloudy. Chance of showers and thunderstorms late. Low 60. High 80 except cooler South Coast.

TUESDAY: Partly cloudy. Low 51. High 70.

7:23AM

Quick forecast update – full discussion later.

TODAY: Sun / cloud mix. Scattered afternoon showers. Highs in the 60s. Wind NW 10-20 MPH.

TONIGHT: Clearing. Lows in the 40s, some 30s inland valleys. Wind light variable.

WEDNESDAY: Sunshine dominating but may become filtered at times by high cloudiness. Highs 50s coast, 60s inland. Wind SE 5-15 MPH.

THURSDAY: Variably cloudy. Low 50. High 64, cooler coast.

FRIDAY: Cloudy. Chance of showers/drizzle. Low 50. High 60, cooler coast.

SATURDAY: Variably cloudy. Chance of showers/thunderstorms late. Low 55. High 75.

SUNDAY: Partly cloudy. Low 55. High 75.

MONDAY: Partly sunny. Low 58. High 78.

7:23AM

Upper level low departs slowly to the east today-Tuesday and though we’ll be on the dry and cool side of it there will be enough cold air aloft and sunshine warming the ground to continue to pop some clouds and a slight chance of passing showers.

Wednesday, that’s gone, but a warm front approaching from the southwest sends increasing high to mid level clouds into the region, turning a day that starts out bright into one the ends less so. Lots of clouds will probably be with us for the second half of the week, and eventually some wet weather, as warm air from the southwest overrides cooler air hanging tough in southeastern New England. Will that warm air ever get in here? Eventually, but it may take until sometime over the weekend to complete the job.

Forecast details…

TODAY: Partly sunny. Slight chance of rain showers. Highs 60-65. Wind NW 10-20 MPH with higher gusts.

TONIGHT: Variably cloudy. Slight chance of rain showers early. Lows in the 40s. Wind NW 5-15 MPH with higher gusts.

TUESDAY: Partly cloudy. Slight chance of rain showers. Highs 60-65. Wind NW 5-15 MPH with higher gusts.

WEDNESDAY: Sun to clouds. Low 48. High 64, 50s coast.

THURSDAY: Cloudy. Chance of light rain late. Low 48. High 60, 50s coast coast.

FRIDAY: Mostly cloudy. Chance of showers. Low 51. High 61, 50s coast.

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

SUNDAY: Partly cloudy. Low 54. High 70.

8:09AM (8:21PM update)

No changes to discussion from before. Just a forecast update, which also hasn’t changed.

SATURDAY NIGHT: Mostly cloudy. Scattered showers during the evening. Episodes of showers and possible thunderstorms overnight. Patchy fog overnight. Lows around 50. Wind WSW 5-15 MPH.

SUNDAY: Partly to mostly cloudy. Chance of showers and thunderstorms early and again later in the day. Highs in the 60s, may touch 70 some inland areas, but only upper 50s  South Coast through Cape Cod. Wind SW 10-20 MPH and gusty.

SUNDAY NIGHT: Mostly cloudy. Chance of showers early. Lows around 50. Wind W 10-20 MPH.

MONDAY: Mostly cloudy. Slight chance of showers. Highs in the upper 50s. Wind W 10-20 MPH.

TUESDAY: Partly cloudy. Low 43. High 61.

WEDNESDAY: Mostly sunny. Low 46. High 63.

THURSDAY: Mostly sunny. Low 47. High 64.

FRIDAY: Mostly cloudy. Chance of showers. Low 51. High 65.

SATURDAY: Mostly cloudy. Chance of showers. Low 52. High 63.

5:36PM

May has come ’round. And it’s the month when the landscape shifts from looking like Spring to looking like Summer, as trees that have not already started to leaf-out will do so. Flowers are already out in most areas, including tree blossoms which have been coloring the landscape for a week or so now, earlier to the south and more recently to the north. Of course along with all the blooming comes allergy problems for some people, and that will be the case for much of the month and into June with especially tree pollens.

As for the weather itself, a broad trough of low pressure will take 3 days to pass through England (Friday through Sunday), so clouds will be plentiful and there will be a daily risk of rain showers.

Next week looks dry, starting cool then moderating a little, with a broad westerly flow dominating the weather in southeastern New England.

Forecast details…

FRIDAY: Partly to mostly cloudy. Rain showers SE MA through mid morning. Slight chance of rain showers in the afternoon. Highs in the 60s. Wind W 10-20 MPH.

FRIDAY NIGHT: Partly cloudy. Lows around 50. Wind SW 5-15 MPH.

SATURDAY: Partly sunny. Slight chance of rain showers in the afternoon. Highs in the 60s to around 70, cooler South Coast and Cape Cod. Wind W 5-15 MPH gusting over 20 MPH.

SATURDAY NIGHT: Variably cloudy. Chance of rain showers early. Lows around 50. Wind WSW 5-15 MPH.

SUNDAY: Partly to mostly cloudy. Chance of rain showers in the afternoon. Highs in the 60s, may touch 70 some inland areas, but only upper 50s  South Coast through Cape Cod. Wind SW 10-20 MPH and gusty.

MONDAY: Mostly cloudy. Low 49. High 58.

TUESDAY: Partly cloudy. Low 43. High 61.

WEDNESDAY: Mostly sunny. Low 46. High 63.

THURSDAY: Mostly sunny. Low 47. High 64.