A flash flood watch is in effect as heavy rain is expected in the D.C. region Saturday night, Storm Team4 says.
The flash flood watch is in effect for D.C., parts of Montgomery and Prince George's counties in Maryland and parts of Arlington, Fairfax, Culpeper, Fauquier, Prince William and Loudoun counties in Virginia until 3 a.m. Sunday. See all weather alerts here.
Some showers and storms could linger into the overnight hours.
Temperatures reached the upper 80s Saturday afternoon with humidity bringing the heat index up into the 90s.
In the month of July, the D.C. area saw 28 days with temperatures 90° or higher.
Sunday will bring more humidity and higher temperatures. The heat index will reach at least 100°. There will be a chance for additional rain, but only in select areas.
Storm Team4 will be keeping a close eye on Hurricane Isaias, currently a category 1 storm. This storm may bring the capital region some rain late Monday into Tuesday.
Latest weather forecast, live radar and weather maps for Washington, D.C., Maryland and Virginia
Stay with Storm Team4 for the latest forecast.