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Full Weather Report

Last updated on August 17, 2026 at 4:39 a.m.

Mark Pe帽a, 7News First Alert Meteorologist

Monday will be the hottest and most humid day of the week in the D.C. area, with highs in the upper 80s to lower 90s and heat index values in the mid to upper 90s. A slow-moving cold front could trigger an isolated afternoon or evening shower or thunderstorm, with a brief downpour or gusty winds possible.

Drier, more comfortable air arrives Tuesday with more sunshine and highs in the mid to upper 80s.

Mostly sunny, seasonably warm weather continues Wednesday before shower and thunderstorm chances return Wednesday night and Thursday.

7News First Alert Forecast

TODAY: Becoming partly cloudy. Hot and humid. Isolated afternoon shower or thunderstorm. Highs between 89 and 93.

TONIGHT: Partly cloudy. Isolated evening shower or thunderstorm. Lows between 70 and 76.

TUESDAY: Partly to mostly sunny and less humid. Highs between 86 and 89.

WEDNESDAY: Sunny. Highs between 85 and 90.

THURSDAY: Partly cloudy with a chance for afternoon showers and thunderstorms. Highs between 83 and 88.