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Excessive Rainfall Possible for the Gulf Coast and Florida; 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 parts of the Gulf Coast into central/northern Florida early this week. Abnormally hot, potentially record-breaking, temperatures will continue for southern California and stretch north toward the Bay Area and Central Valley this week. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Overcast

66°F

19°C

Humidity 90%
Wind Speed Calm
Barometer 30.05 in (1017.9 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 4 Oct 5:55 pm EDT
Extended Forecast for

Mount Vernon VA

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Patchy Fog

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 49. North wind around 7 mph.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. North wind around 6 mph becoming calm in the afternoon.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 48. Light south wind.

    Low: 48 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 60. Calm wind.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 71. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 49. North wind around 7 mph.
Tuesday
Sunny, with a high near 66. North wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Clear, with a low around 48. Light south wind.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 71.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.7°N 77.11°W (Elev. 3 ft)
Last Update:
4:53 pm EDT Oct 4, 2026
Forecast Valid:
6pm EDT Oct 4, 2026-6pm EDT Oct 11, 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