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

93°F

34°C

Humidity 51%
Wind Speed W 7 G 17 mph
Barometer 29.79 in (1009.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 17 Aug 3:55 pm EDT
Extended Forecast for

Lorton VA

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms after 5pm. Partly sunny, with a high near 90. West wind around 7 mph. Chance of precipitation is 20%.

    High: 90 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 73. Light northwest wind. Chance of precipitation is 40%.

    Low: 73 °F

    Scattered
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87. North wind around 7 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. Light northwest wind.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.

    High: 87 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 5pm. Partly sunny, with a high near 90. West wind around 7 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 73. Light northwest wind. Chance of precipitation is 40%.
Tuesday
Sunny, with a high near 87. North wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 69. Light northwest wind.
Wednesday
Sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
Sunny, with a high near 82.
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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:
2:30 pm EDT Aug 17, 2026
Forecast Valid:
4pm EDT Aug 17, 2026-6pm EDT Aug 24, 2026
 
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