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Boston weather: Partial sunshine and cool on Wednesday

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Forecast discussion: During the early morning, a back door cold front came passing through Southern New England. We received a few showers after midnight, with mostly cloudy skies the rest of the day. However, temperatures for the day reached 78 degrees in Boston. As the front continues passes south of Rhode Island, there is the chance for some more showers and isolated thunderstorms until midnight.

After midnight, we will see some drier weather for a small period of time. A weak high pressure ridge coming from the Great Lakes will move over New England. We will keep the cloudy skies, but we will see peeks of sunshine from time to time. With east northeast winds, our temperatures will remain in the upper 60’s.

As we enter Thursday, the ridge will begin to weaken. A low pressure system now moving into central Canada will move towards the east coast. This low will help bring the return of shower activity by the afternoon. The low will also pick up some moisture from the Great Lakes to bring back more widespread precipitation by Friday. The heavier precipitation may continue into the evening hours.

The cold front will finally push offshore by early Saturday afternoon. We should see some sunshine by the late afternoon. We will have partly cloudy skies by Saturday night, with bright sunshine on Sunday. The high will begin to move into the Atlantic late on Monday, giving us dry weather, but clouds will increase during the late afternoon. At this time the American model believes we will see another cold front bring more showers by early Tuesday morning. The European and United Kingdom models show drier weather. For now, I will keep some precipitation in the forecast, although I would not be surprised if I change Sunday’s forecast over the next couple of days.

72 hour forecast:

Tonight: Cloudy with isolated showers, a possible thunderstorm, and patchy fog. We will see a low of 60.
Wednesday: Isolated showers in the morning, with partly sunny skies by the early afternoon. We will see a high of 67 with east-northeast winds of 11-14 mph.
Wednesday night: Cloudy with isolated showers until 3 a.m. and a low of 57. Winds will come from the east-southeast at 6-9 mph.
Thursday: Partly sunny with scattered showers by the mid-afternoon. We will see a high of 68.
Thursday night: Cloudy with showers/thunderstorms ending in the late evening. We will see a low of 61.
Friday: Cloudy with showers, light rain, and isolated thunderstorms by the early afternoon. We will see a high of 73.
Friday night: Showers/light rain with a low of 65.

Extended Forecast:
Saturday: Cloudy with showers/light rain ending by noon. Partly sunny skies expected by the late afternoon. Highs 75-78, lows 59-62.
Sunday: Mostly sunny. Highs 75-78, lows 59-62.
Monday: Mostly sunny, with increasing clouds in the late afternoon. A shower before midnight is possible. Highs 79-82, lows 62-65.
Tuesday: Overcast with showers/rain by 1 a.m. Highs 78-81, lows 63-66.

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