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Boston weather: Some sun, risk for showers Tuesday

Forecast discussion: Last night, a few showers and thunderstorms passed through eastern Massachusetts. A half inch of rain fell at Logan Airport. Also, in Worcester, MA, an EF-0 tornado was reported, bringing wind speeds of 85 mph. As we move through Labor Day, the weather is actually better than it was forecast. Boston has seen some sunshine through the day. But, radar imagery does show widely scattered showers and thunderstorms forming. So, there will be a risk for some activity through the overnight. We will also see patchy fog form, due to the high dewpoint temperatures.

As we all return to work on Tuesday, it will still feel like summer. Temperatures will approach the middle to upper 80’s, with the slight risk for some afternoon showers and thunderstorms. A cold front will push through by tomorrow night, helping to create a few more showers and thunderstorms. The activity will move offshore by mid-morning on Wednesday. High pressure will build over New England, giving us bright sunshine for the rest of Wednesday, and continue into Friday.

As we move into the weekend, we will see increasing clouds for Friday evening. The American model is calling for scattered showers by early Saturday morning. We could see heavier rainfall by the late afternoon. Rain will taper to showers during early Sunday morning, before all precipitation ends by noon. The cold front will pass through, and much cooler air behind it will give us the feeling of fall. I am only expecting highs to reach the lower 70’s for Sunday and next Monday.

72 hour forecast:

Tonight: Mostly cloudy with the risk for showers. All precipitation ends by 4 a.m. Patchy fog is expected before 4 a.m. We will see a low of 72.
Tuesday: Mostly sunny in the morning, with partly sunny skies and the risk for showers and thunderstorms by 3 p.m. We will see a high of 88 with south-southwest winds of 9-12 mph.
Tuesday night: Cloudy with isolated showers and thunderstorms with a low of 72. Winds will come from the west-southwest at 9-12 mph.
Wednesday: Morning showers end by 9 a.m. with mostly sunny skies. We will see a high of 84.
Wednesday night: Clear skies and cooler with a low of 65.
Thursday: Mostly sunny with a high of 84.
Thursday night: Partly cloudy with a low of 66.

Extended Forecast:
Friday: Mostly sunny with increasing clouds in the evening. Highs 83-86, lows 68-71.
Saturday: Partly sunny with scattered showers by 5 a.m. Precipitation could become heavier by the late afternoon. Highs 81-84, lows 60-63.
Sunday: Rain tapering to showers before ending by noon. Partly sunny skies expected the rest of the day. Highs 70-73, lows 57-60.
Monday: Mostly sunny. Highs 70-73, lows 57-60.