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

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

41°F

5°C

Humidity 79%
Wind Speed Calm
Barometer 30.16 in (1022.1 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 13 Nov 8:56 pm CST
Extended Forecast for

3 Miles NNE Dahlgren IL

  • Tonight

    Tonight: Increasing clouds, with a low around 43. South wind 3 to 6 mph.

    Low: 43 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 72 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 76. Southwest wind 11 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. West southwest wind 6 to 10 mph becoming north northwest after midnight. Winds could gust as high as 18 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 5 to 7 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Light and variable wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers after noon. Mostly sunny, with a high near 59. Calm wind becoming east southeast 5 to 8 mph in the morning.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 45. East wind around 7 mph.

    Low: 45 °F

    Showers
    Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 43. South wind 3 to 6 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 58. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 76. Southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 44. West southwest wind 6 to 10 mph becoming north northwest after midnight. Winds could gust as high as 18 mph.
Sunday
Sunny, with a high near 60. Northwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 36. Light and variable wind.
Monday
A slight chance of showers after noon. Mostly sunny, with a high near 59. Calm wind becoming east southeast 5 to 8 mph in the morning.
Monday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 45. East wind around 7 mph.
Tuesday
A chance of showers, mainly before noon. Partly sunny, with a high near 63. East wind 7 to 10 mph becoming south southwest in the morning.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 44. East wind 3 to 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 60. East wind 5 to 8 mph becoming south southeast in the afternoon.
Wednesday Night
Showers likely. Cloudy, with a low around 47. South southeast wind 5 to 7 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 62. South wind 8 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Dahlgren IL
 38.24°N 88.66°W
Last Update:
6:51 pm CST Nov 13, 2025
Forecast Valid:
9pm CST Nov 13, 2025-6pm CST Nov 20, 2025
 
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Additional Resources

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Chance of Precipitation