Threats of Heavy Rainfall, Severe Thunderstorms and Dangerous Heat

Several complexes of thunderstorms, some severe with heavy rainfall, will impact areas from the northern Plains, Great Lakes, Ohio Valley to the mid-Atlantic. This threat will shift toward the Carolinas on Friday. Heavy rainfall, remnants of Edouard, continues for portions of eastern Texas through today. In-between these systems, a dome of high pressure and heat for central and eastern states. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

89°F

32°C

Humidity	64%
Wind Speed	S 3 mph
Barometer	29.90 in (1012.7 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	3 Sep 6:55 pm EDT

More Information:

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

Extended Forecast for

2 Miles NNW La Plata MD

Tonight
Low: 73 °F
Scattered
T-storms then
Scattered
Showers and
Patchy Fog
Friday
High: 92 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 70 °F
Showers
Likely then
Chance
Showers
Saturday
High: 84 °F
Partly Sunny
then Chance
Showers
Saturday Night
Low: 63 °F
Chance
Showers then
Partly Cloudy
Sunday
High: 82 °F
Sunny
Sunday Night
Low: 60 °F
Mostly Clear
Labor Day
High: 81 °F
Sunny
Monday Night
Low: 60 °F
Mostly Clear

Detailed Forecast

Tonight

Scattered showers and thunderstorms. Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 73. Light and variable wind. Chance of precipitation is 40%.

Friday

A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 92. Heat index values as high as 102. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

Friday Night

Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 70. Light northwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers after 2pm. Partly sunny, with a high near 84. North wind around 6 mph. Chance of precipitation is 30%.

Saturday Night

A chance of showers before 8pm. Partly cloudy, with a low around 63. Light north wind. Chance of precipitation is 30%.

Sunday

Sunny, with a high near 82.

Sunday Night

Mostly clear, with a low around 60.

Labor Day

Sunny, with a high near 81.

Monday Night

Mostly clear, with a low around 60.