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Forecast: Boston Heating Up Before Cold Front Saturday

BOSTON — Although this morning is comfortably cool, temperatures are going to be heating up very quickly, and I expect most areas to be in the 80-degree range by late morning.

These warm readings will continue through 5 p.m. before temperatures fall back into the 70s. You will notice the air still feels dry most of the day, but there will be an increase in the humidity by sunset.

Overnight it will be quite warm to start the evening. However, with clear skies and light winds, you will see temperatures fall back into the 60s. It won’t be uncomfortable for sleeping, but a fan will be a good idea.

Friday is the hottest day of the week of this current summer stretch. It’s also likely the hottest day we will see until next summer. It’s not impossible that temperatures reach 90 degrees even in October, but the odds are rapidly decreasing that this will occur.

A cold front comes pushing through the region on Saturday. I am already concerned about possible strong to severe weather for late that day and early in the evening. I’ll have more about this in the next two days, but you should be aware that outdoor activities may be interrupted late Saturday.

Drier and more comfortable air arrives on Sunday and highs will return to the 70s, which is closer to weather typically seen during the second week of September.

If you love the summer heat, enjoy the next three days as this will come to an end soon.

Thursday: Sunny and very warm. Highs between 83-88.

Thursday night: Mostly clear and turning muggy by morning. Lows in the low to mid 60s.

Friday: Sunny, hot and humid. Highs near 90.

Saturday: A blend of clouds and sunshine. Warm and humid. Some afternoon and evening thunderstorms developing. These storms could be strong to severe. Highs in the 80s.

Sunday: Partly sunny and noticeably cooler with highs in the low to mid 70s.

Monday: Sunny, with a high near 75 degrees.

Follow updates from David Epstein on Twitter @growingwisdom.

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