Forecast discussion: After having several days of above average temperatures for April, we are about to return to normal temperatures. A frontal boundary that allowed warm, almost tropical air into Boston was moving south of the state. Due to the easterly winds, the high temperature only reached 54 in the capital city today.
Along this frontal boundary were some heavy thunderstorms and some powerful lightning moving through southern New York and western Connecticut. We may hear a rumble of thunder before midnight, along with some moderate shower activity. As we move into early Thursday morning, the showers will end, with some drizzle and patchy fog remaining.
As we move into Thursday, an isolated shower will remain over the state through the day. As we move into Thursday night, the weather may put a damper to the Red Sox game at Fenway. There will be the chance for scattered showers during the game.
By early Friday evening, a cold front in the south central U.S. at the moment will be moving through New England. The front will bring us some significant rainfall, as precipitation will be heavy at times during the late morning into the afternoon. There may be some street and river flooding possible during the evening hours. It will also be colder, with highs on Thursday and Friday only in the middle 40’s.
The precipitation will become lighter through Friday evening, with precipitation tapering off by early Saturday morning. High pressure will begin to build over New England for the weekend. We will have partly to mostly sunny skies, and temperatures will climb into the middle 50’s.
After the weekend, we will see increasing clouds on Monday, due to a warm front that will remain to our west by the evening. But, the front will move into New England on Tuesday, giving us the chance for some showers. On Wednesday, we will see limited sunshine with some possible showers through Wednesday morning, with limited sunshine by the afternoon.
72 hour forecast:
Tonight: Showers with isolated thunderstorms before midnight, with isolated showers and drizzle by 3 a.m. Patchy fog will form after midnight. We will see a low of 43.
Thursday: Drizzle in the morning, with an isolated shower in the afternoon. It will be cooler with a high of 47 with northeast winds at 10-13 mph.
Fenway Park forecast (7:05 p.m. vs. Baltimore Orioles): Scattered showers, 41.
Thursday night: Scattered showers with a low of 36. Winds will be increasing to 11-16 mph from the east-northeast towards dawn.
Friday: Precipitation turning to heavy rain by the late morning, before tapering to showers by the late evening. It will be windy with the high only reaching 42.
Friday night: Showers ending a few hours before dawn with a low of 39.
Saturday: Mostly sunny and warmer with a high of 57.
Saturday night: Partly cloudy with a low of 38.
Sunday: Partly sunny. Highs 56-59, lows 36-39.
Monday: Becoming mostly cloudy by mid-afternoon. Highs 57-60, lows 44-47.
Tuesday: Mostly cloudy with showers possible by the afternoon. Highs 60-63, lows 43-46.
Wednesday: Showers ending in the morning, with partly sunny skies by the afternoon. Highs 60-63, lows 42-45.