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

30°F

-1°C

Humidity 43%
Wind Speed N 5 mph
Barometer 30.37 in (1028.8 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 18 Mar 8:55 am EDT
Extended Forecast for

Merrifield VA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 43. North wind around 6 mph becoming light and variable.

    High: 43 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Southeast wind around 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 53. South wind 5 to 7 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 38. Southeast wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Partly sunny, with a high near 61. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 43. North wind around 6 mph becoming light and variable.
Tonight
Partly cloudy, with a low around 31. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 53. South wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 38. Southeast wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 61. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 56.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrifield VA
 38.87°N 77.26°W (Elev. 299 ft)
Last Update:
8:29 am EDT Mar 18, 2026
Forecast Valid:
9am EDT Mar 18, 2026-6pm EDT Mar 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