Forecast discussion: Despite the fact I predicted thunderstorms reaching Boston by 4 p.m. on Saturday, the first raindrops fell a couple of hours later. According to Logan Airport, almost a quarter inch of rain fell as a thunderstorm cell moved over the capital city. We will continue to see off and on showers and thunderstorms through the overnight, as the cold front pushes through Southern New England.
By Sunday morning, we will still see lingering showers into the late morning. By then, the cold front will be offshore, and a strong high pressure ridge will move over New England. We will feel drier air, as our dewpoint temperatures will in the upper 40’s and lower 50’s. Also, with east-northeast winds, temperatures will only reach the middle 70’s. We will see cooler temperatures on Monday despite sunshine, reaching the lower 70’s.
As we enter Tuesday, the computer models are indicating that a weak low over southern Georgia will move up into the Mid-Atlantic, and provide us with the risk for some showers by the morning. There may be a passing shower during the overnight, before a weak high pressure ridge brings us limited sunshine by the afternoon by Wednesday.
The ridge will hold off a new frontal boundary reaching Southern New England on Thursday, but we will see another round of showers and light rain through most of Friday. The front will move offshore by Saturday morning, with showers coming to an end by the early afternoon. We will also see the coolest air to date, as high temperatures will struggle to reach the lower 70’s.
72 hour forecast:
Tonight: Scattered showers and thunderstorms during the overnight. We will see a low of 68.
Sunday: Precipitation ends by 11 a.m. with mostly sunny skies by the late afternoon. We will cool down to a high of 76 with east-northeast winds at 9-12 mph.
Fenway Park Forecast (1:35 p.m. vs. Toronto): Sunny, 73.
Sunday night: Partly cloudy and cooler with a low of 60. Winds will come from the north-northeast at 8-11 mph.
Monday: Mostly sunny with a high of 71.
Monday night: Partly to mostly cloudy with a low of 59.
Tuesday: Mostly cloudy with possible showers by the morning with a high of 70.
Tuesday night: Mostly cloudy with isolated showers possible and a low of 59.
Wednesday: An isolated shower in the morning, with partly sunny skies by the afternoon. Highs 71-74, lows 60-63.
Thursday: Partly sunny and warmer. Highs 76-79, lows 64-67.
Friday: Overcast with showers developing around 2 a.m. Highs 76-79, lows 57-60.
Saturday: Showers continue until 1 p.m., before precipitation ends. Partly sunny skies expected before sunset. Highs 71-74, lows 55-58.