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.

Overcast

74°F

23°C

Humidity 71%
Wind Speed Calm
Barometer 30.21 in (1023.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Sep 1:55 pm EDT
Extended Forecast for

Lorton VA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 76. Calm wind becoming southeast around 5 mph.

    High: 76 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 59. East wind around 6 mph becoming calm after midnight.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 64. South wind around 6 mph.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. South wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 76. Calm wind becoming southeast around 5 mph.
Tonight
Partly cloudy, with a low around 59. East wind around 6 mph becoming calm after midnight.
Monday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 64. South wind around 6 mph.
Tuesday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. South wind 5 to 7 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Thursday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Lorton VA
 38.71°N 77.23°W (Elev. 125 ft)
Last Update:
2:28 pm EDT Sep 21, 2025
Forecast Valid:
2pm EDT Sep 21, 2025-6pm EDT Sep 27, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation