DAYS 1-5 (APRIL 25-29)

Fairly typical spring weather will be ours as we head through the last week of April. The frontal boundary that came through as a back door cold front over the weekend sits near the western reaches of the WHW forecast area this morning, even triggering a few showers due to a disturbance moving by. These showers won’t last long and will impact eastern CT and parts of RI into mid morning. It’ll turn milder away from the coast than it was yesterday, but coastal areas will hang onto the cool air with onshore breezes off the still-chilly water. Tuesday, the aforementioned boundary returns as a warm front, but we only get into the warm sector behind this front and ahead of an approaching cold front for a brief period of time. That cold front, parented by low pressure passing to our north, will move through from west to east Tuesday night and offshore Wednesday just as a weak wave of low pressure forms on it and moves by, then helps pull it further offshore. While this will be taking place during the evolution of a blocking pattern, the low pressure area that brings the unsettled weather Tuesday to early Wednesday will end up far enough offshore that we are dry from later Wednesday through Friday. But the price to pay for the dry weather will be cool and breezy conditions with a north to northwest flow. It won’t be totally sunny any of these days either as we start with the clouds and some lingering wet weather Wednesday, then see diurnal cloud development underneath a pool of cold air aloft both Thursday and Friday.

TODAY: Clouds and showers eastern CT and parts of RI until about morning, otherwise sun/cloud mix. Highs 55-62 southern NH and eastern MA as well as South Coast, 63-70 interior MA, northern RI, and northeastern CT. Wind E up to 10 MPH shifting to S especially in areas west and south of Boston.

TONIGHT: Mostly cloudy. Lows 48-55. Wind S 5-15 MPH.

TUESDAY: Mostly cloudy. Showers likely, especially in the afternoon. Highs 57-64. Wind S 10-20 MPH.

TUESDAY NIGHT: Cloudy. Showers likely. Patchy fog. Lows 45-52. Wind variable 5-15 MPH.

WEDNESDAY: Mostly cloudy with showers likely during the morning. Partly sunny with a chance of a shower in the afternoon. Highs 52-59. Wind N to NW 10-20 MPH, higher gusts.

WEDNESDAY NIGHT: Partly cloudy. Lows 38-45. Wind NW 10-20 MPH.

THURSDAY: Partly sunny. Highs 50-57. Wind NW 10-20 MPH, higher gusts.

THURSDAY NIGHT: Partly cloudy. Lows 37-44. Wind NW 5-15 MPH, higher gusts.

FRIDAY: Partly cloudy. Highs 50-57. Wind NW 10-20 MPH, higher gusts.

DAYS 6-10 (APRIL 30 – MAY 4)

Blocking to slow progression in the pattern. Dry, cool to seasonable start as we transition from April to May. Unsettled weather around May 2-4 with a variable temperature trend, briefly milder then possibly much cooler.

DAYS 11-15 (MAY 5-9)

Still a a tendency for blocking to take place with slow-moving systems. At least one low pressure system should impact the region with unsettled weather, favoring the early part of the period. A lot of detail to work out, which can’t be done this far in advance.