Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

79°F

26°C

Humidity	83%
Wind Speed	Calm
Barometer	29.94 in (1014.1 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	4 Sep 8:55 am EDT

More Information:

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

Extended Forecast for

Accokeek MD

Today
High: 89 °F
Sunny then
Showers
Likely
Tonight
Low: 74 °F
Chance
T-storms then
Mostly Cloudy
Saturday
High: 83 °F
Slight Chance
Showers then
Partly Sunny
Saturday Night
Low: 68 °F
Chance
T-storms then
Partly Cloudy
Sunday
High: 81 °F
Sunny
Sunday Night
Low: 66 °F
Mostly Clear
Labor Day
High: 81 °F
Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 85 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 89. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 74. Light and variable wind. Chance of precipitation is 30%.

Saturday

A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. North wind 3 to 5 mph. Chance of precipitation is 20%.

Saturday Night

A chance of showers and thunderstorms before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 68. Light north wind. Chance of precipitation is 30%.

Sunday

Sunny, with a high near 81. Northeast wind around 6 mph.

Sunday Night

Mostly clear, with a low around 66.

Labor Day

Sunny, with a high near 81.

Monday Night

Partly cloudy, with a low around 62.

Tuesday

Mostly sunny, with a high near 85.

Tuesday Night

Partly cloudy, with a low around 65.