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.

Fair

72°F

22°C

Humidity 25%
Wind Speed S 8 mph
Barometer 29.81 in (1009.8 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 20 Mar 3:55 pm EDT
Extended Forecast for

Merrifield VA

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Low around 50. Southwest wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 66. North wind 6 to 8 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. East wind around 6 mph becoming south after midnight.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 79. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 79 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 53. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of rain before 2pm. Partly sunny, with a high near 61. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Low around 50. Southwest wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 66. North wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 48. East wind around 6 mph becoming south after midnight.
Sunday
Partly sunny, with a high near 79. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 53. South wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Monday
A slight chance of rain before 2pm. Partly sunny, with a high near 61. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 60. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrifield VA
 38.87°N 77.26°W (Elev. 299 ft)
Last Update:
2:23 pm EDT Mar 20, 2026
Forecast Valid:
4pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation