10-Day Weather Forecast in Washington, DC

10-Day Forecast

Full Weather Report

Last updated on July 1, 2023 at 5:06 p.m.

Brian van de Graaff, 7News First Alert Senior Meteorologist

Dangerous heat begins the workweek with high temperatures forecast around 100. Sunday was a record 101 in D.C. The record temperature in D.C. for July 15 is 100 and was set back in 1988, so expect a likely tie or record-breaking number Monday afternoon. With the humidity, the heat index values will range from 105 to 110. An excessive heat warning is in effect from 11 a.m. until 8 p.m. There is a chance for a few pop-up showers or thunderstorm to develop in the afternoon, bringing some temporary heat relief. There is potential for an isolated storm or two to become strong or severe. Expect a warm and humid night, with temperatures not falling below 80 in D.C.

Dangerous heat continues Tuesday, with high temperatures forecast in the low 100s. The heat index will range again from 105 to 110 during the afternoon, which is why excessive heat watches have been issued. A pop-up shower or thunderstorm is possible during the afternoon, but rain chances only sit around 20%.

Wednesday will be the last extremely hot and humid day of the week before a welcome drop in temperatures and humidity. High temperatures will likely top out below 100, but heat index values will peak around 105. Scattered showers and storms are likely during the afternoon and evening, as a cold front approaches the D.C. area.

It will be noticeably cooler on Thursday, with highs in the middle 80s. Humidity levels will be slowly falling, as well. Lingering showers are possible with the passage of the cold front.

7News First Alert Forecast

MONDAY: HEAT ALERT, STORM ALERT: Hot, isolated storms. Highs between 97 and 101, with a heat index between 105 and 110.
Winds: North to South 5-10 mph

MONDAY NIGHT: Mainly clear. Lows between 75 and 80.
Winds: Southwest 5-10 mph

TUESDAY: HEAT ALERT: Hot, isolated storms Highs between 98 and 103, with a heat index between 105 and 110.
Winds: Southwest 5-10 mph

WEDNESDAY: HEAT ALERT: Hot, isolated storms. Highs between 93 and 98, with a heat index peaking around 105.
Winds: Southwest 5-10 mph

THURSDAY: Partly sunny. Highs in the middle 80s.
Winds: North 5-10 mph

More from WTOP

Log in to your WTOP account for notifications and alerts customized for you.

Sign up