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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Franconia VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 74. Northwest wind around 6 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 5pm. Increasing clouds, with a high near 88. Northeast wind 3 to 5 mph. Chance of precipitation is 30%.

    High: 88 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers after 2am. Mostly cloudy, with a low around 71. Light east wind. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, mainly before 8am. Partly sunny, with a high near 86. Northeast wind around 6 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.

    Low: 74 °F

    Chance
    T-storms

  • Monday

    Monday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 74. Northwest wind around 6 mph becoming calm in the evening.
Friday
A chance of showers, with thunderstorms also possible after 5pm. Increasing clouds, with a high near 88. Northeast wind 3 to 5 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers after 2am. Mostly cloudy, with a low around 71. Light east wind. Chance of precipitation is 40%.
Saturday
A chance of showers, mainly before 8am. Partly sunny, with a high near 86. Northeast wind around 6 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 90. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.
Monday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Franconia VA
 38.79°N 77.16°W (Elev. 200 ft)
Last Update:
2:23 pm EDT Aug 13, 2026
Forecast Valid:
3pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation