From the National Weather Service:
Ready for some drier (and quieter) weather?
High pressure building into New England from the Great Lakes will bring less humid air into the region today and Friday. It will still be warm with highs in the 80s both days (cooler at the shore) but you'll notice the difference tonight as lows fall into the 50s and lower 60s!
It will turn a little more humid over the weekend but it won't be as uncomfortable as the past few days. A cold front crossing the region should trigger scattered showers and thunderstorms, especially Saturday into early Sunday.