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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Mostly Cloudy

73°F

23°C

Humidity 81%
Wind Speed SE 5 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 20 Sep 5:55 am EDT
Extended Forecast for

Occoquan VASimilar City Names

  • Today

    Today: Scattered showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. Southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    High: 85 °F

    Scattered
    Showers then
    Scattered
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Monday

    Monday: A slight chance of showers between 2pm and 4pm. Mostly cloudy, with a high near 75. Northeast wind around 8 mph. Chance of precipitation is 20%.

    High: 75 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers and thunderstorms likely, then showers after 11pm. Low around 61. Northeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am. High near 67. Northeast wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.

    High: 65 °F

    Chance
    Showers

Detailed Forecast

Today
Scattered showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. Southwest wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 50%.
Monday
A slight chance of showers between 2pm and 4pm. Mostly cloudy, with a high near 75. Northeast wind around 8 mph. Chance of precipitation is 20%.
Monday Night
Showers and thunderstorms likely, then showers after 11pm. Low around 61. Northeast wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 67. Northeast wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Tuesday Night
Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Cloudy, with a low around 56. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 20%.
Friday
A slight chance of showers. Mostly sunny, with a high near 67. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Occoquan VASimilar City Names
 38.69°N 77.26°W (Elev. 59 ft)
Last Update:
4:52 am EDT Sep 20, 2026
Forecast Valid:
6am EDT Sep 20, 2026-6pm EDT Sep 26, 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