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

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Partly Cloudy

63°F

17°C

Humidity 95%
Wind Speed Calm
Barometer 29.92 in (1013.4 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 Jul 5:55 am EDT
Extended Forecast for

Lorton VA

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 85. South wind 7 to 10 mph. Chance of precipitation is 90%.

    High: 85 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86. Light and variable wind.
Tonight
A chance of showers and thunderstorms, mainly before midnight. Partly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 85. South wind 7 to 10 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 68. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 69.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lorton VA
 38.71°N 77.23°W (Elev. 125 ft)
Last Update:
4:53 am EDT Jul 26, 2026
Forecast Valid:
6am EDT Jul 26, 2026-6pm EDT Aug 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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