UPDATE: NWS Upgrades to Flood Warning for Montgomery County

Update, 4:35 p.m.: The National Weather Service has upgraded the flood watch to a flood warning through 9:45 p.m.

Small streams and creeks are most likely to be affected. 

A flood warning means flooding is imminent or has been reported, but flash flooding is not expected.

Original post, 9:03 a.m.: A flood watch has been issued for Montgomery County through 7 p.m., according to the National Weather Service.

WTOP reports the rain will be heaviest through the afternoon hours in the immediate Washington area with rainfall amounts of 1 inch and above. Temperatures will rise to the high 50s. The rain should taper off later this evening with temperatures in the 30s.