More heavy rain and flooding northwest of D.C. today

This Afternoon: Showers Possible, Heaviest NW

Highs: 50s to Low 70s | Wind: S 5-10 m.p.h.

Overnight: Partly Cloudy, Isolated Showers

Lows: Mid 50s to Low 60s | Wind: S 5-10 m.p.h.

Wednesday: Partly Cloudy, Warmer, PM T-Storms

Highs: Around 80 | Wind: SW 10-15 m.p.h.

A Flood Watch is in effect for Frederick County, MD, Clarke, Frederick and Shenandoah Counties in VA and points west through 6pm tonight.

A frontal boundary will sit over the northern portions of the region today bringing the chance for showers and a few thunderstorms. Rain may be heavy at times northwest of town which is why that part of the area is under a Flood Watch until 6pm. Highs today should range from the 50s northwest of town to the lower 70s in areas to the south.{ }A few showers will linger through the overnight hours with lows in the 50s and 60s.

Wednesday, a trailing cold front will pass through the region in the afternoon hours. Ahead of the front, partly sunny skies and warm temperatures in the 80s can be expected. As the front moves through, thunderstorms will be possible with the potential for a few of them becoming severe. Thursday will be much cooler but pleasant with sunny skies and highs in the mid 60s.

More rain is likely through the day Friday with highs only in the 50s. Saturday will be warmer as a warm front passes to the north of the area. An isolated shower or thunderstorm will be possible, but the better chance will exist through the day on Sunday as the next cold front moves overhead.