Temps tonight could drop to coldest this early since 1988
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Temperatures in the DMV area are expected to drop into the 30s tonight. If temperatures hit 36 degrees or below tonight, it will be the coldest temperatures this early in the fall since 1988.

Frost advisory in effect tonight across DMV

A frost advisory is in effect from 2am to 9am Wednesday morning for the D.C. area. 

Temps to drop into the 30s and 40s overnight
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Temperatures Tuesday feel a bit more like late fall as opposed to early fall ahead of dropping temperatures overnight into Wednesday.