Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Partly Cloudy

70°F

21°C

Humidity	96%
Wind Speed	Calm
Barometer	30.04 in (1017.5 mb)
Dewpoint	69°F (21°C)
Visibility	9.00 mi
Last update	31 Aug 3:55 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Accokeek MD

Today
High: 88 °F
Partly Sunny
then
Scattered
T-storms
Tonight
Low: 76 °F
Scattered
T-storms then
Slight Chance
Showers
Tuesday
High: 92 °F
Sunny then
Scattered
T-storms
Tuesday Night
Low: 79 °F
Scattered
T-storms then
Mostly Clear
Wednesday
High: 92 °F
Sunny then
Slight Chance
T-storms
Wednesday Night
Low: 78 °F
Slight Chance
T-storms then
Slight Chance
Showers
Thursday
High: 95 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 74 °F
Chance
T-storms
Friday
High: 89 °F
Slight Chance
T-storms then
Chance
Showers

Detailed Forecast

Today

Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming northeast around 5 mph. Chance of precipitation is 40%.

Tonight

Scattered showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 30%.

Tuesday

Scattered showers and thunderstorms after 2pm. Sunny, with a high near 92. West wind 3 to 6 mph. Chance of precipitation is 40%.

Tuesday Night

Scattered showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 79. Light southwest wind. Chance of precipitation is 40%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Light and variable wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 78. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 74. Chance of precipitation is 40%.

Friday

A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

Saturday

A slight chance of showers and thunderstorms. Sunny, with a high near 85. Chance of precipitation is 20%.

Saturday Night

Partly cloudy, with a low around 65.

Sunday

Sunny, with a high near 82.