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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Overcast

67°F

19°C

Humidity 94%
Wind Speed Calm
Barometer 29.75 in (1007.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 11 Oct 8:55 pm EDT
Extended Forecast for

Mount Vernon VA

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Patchy fog. Low around 63. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers and
    Patchy Fog

  • Columbus Day

    Columbus Day: Showers likely, mainly before 7am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers
    Likely and
    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. Light northwest wind.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 80 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Southwest wind around 6 mph.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers before 2pm. Mostly sunny, with a high near 71. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Patchy fog. Low around 63. Northeast wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Columbus Day
Showers likely, mainly before 7am. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 58. Light northwest wind.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 65. Southwest wind around 6 mph.
Wednesday
Sunny, with a high near 84.
Wednesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Thursday
A slight chance of showers before 2pm. Mostly sunny, with a high near 71. Chance of precipitation is 20%.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 57. Breezy.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.74°N 77.11°W (Elev. 49 ft)
Last Update:
7:53 pm EDT Oct 11, 2026
Forecast Valid:
9pm EDT Oct 11, 2026-6pm EDT Oct 18, 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