National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

A Few Clouds

38°F

3°C

Humidity 32%
Wind Speed S 6 mph
Barometer 30.39 in (1029.5 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 18 Mar 1:55 pm EDT
Extended Forecast for

Annandale VA

  • This Afternoon

    This Afternoon: Sunny, with a high near 43. South wind around 6 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 32. Southeast wind around 5 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 54. South wind 5 to 7 mph.

    High: 54 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39. Light south wind.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 68. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers then
    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

This Afternoon
Sunny, with a high near 43. South wind around 6 mph.
Tonight
Increasing clouds, with a low around 32. Southeast wind around 5 mph.
Thursday
Partly sunny, with a high near 54. South wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 39. Light south wind.
Friday
Partly sunny, with a high near 63. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 68. Chance of precipitation is 30%.
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 57.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Annandale VA
 38.84°N 77.21°W (Elev. 299 ft)
Last Update:
1:21 pm EDT Mar 18, 2026
Forecast Valid:
2pm 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