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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Overcast

73°F

23°C

Humidity 94%
Wind Speed Calm
Barometer 30.01 in (1016.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 2 Oct 9:55 pm EDT
Extended Forecast for

Mount Vernon VASimilar City Names

  • Tonight

    Tonight: Showers likely, mainly between 11pm and 2am. Mostly cloudy, with a low around 61. North wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers, mainly between 10am and 3pm. Mostly cloudy, with a high near 69. North wind 5 to 7 mph. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 5am. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Showers. High near 67. East wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 8pm. Cloudy, with a low around 60. Calm wind. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

Detailed Forecast

Tonight
Showers likely, mainly between 11pm and 2am. Mostly cloudy, with a low around 61. North wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of showers, mainly between 10am and 3pm. Mostly cloudy, with a high near 69. North wind 5 to 7 mph. Chance of precipitation is 40%.
Saturday Night
Showers likely, mainly after 5am. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. High near 67. East wind 3 to 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers likely, mainly before 8pm. Cloudy, with a low around 60. Calm wind. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 46.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VASimilar City Names
 38.72°N 77.11°W (Elev. 36 ft)
Last Update:
7:53 pm EDT Oct 2, 2026
Forecast Valid:
10pm EDT Oct 2, 2026-6pm EDT Oct 9, 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