National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

75°F

24°C

Humidity 96%
Wind Speed Calm
Barometer 29.88 in (1012.0 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Last update 17 Jul 3:55 am EDT
Extended Forecast for

2 Miles SE Lorton VA

Heat Advisory July 17, 11:00am until July 17, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 96. Heat index values as high as 108. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 96 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 77. Southwest wind around 6 mph becoming northwest after midnight.

    Low: 77 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 89. Northwest wind around 6 mph. Chance of precipitation is 40%.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 96. Heat index values as high as 108. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 77. Southwest wind around 6 mph becoming northwest after midnight.
Friday
A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 89. Northwest wind around 6 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Lorton VA
 38.68°N 77.2°W (Elev. 118 ft)
Last Update:
4:30 am EDT Jul 17, 2025
Forecast Valid:
4am EDT Jul 17, 2025-6pm EDT Jul 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation