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

45°F

7°C

Humidity 100%
Wind Speed Calm
Barometer 30.34 in (1027.8 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 8 Oct 11:56 pm CDT
Extended Forecast for

2 Miles SW Dahlgren IL

  • Overnight

    Overnight: Clear, with a low around 44. Calm wind becoming north northeast around 5 mph.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 72. East northeast wind 6 to 9 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 39. East northeast wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 73. Light and variable wind.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the morning.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. Light southeast wind.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 77. South southeast wind 3 to 8 mph.

    High: 77 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. Southeast wind 3 to 6 mph.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 44. Calm wind becoming north northeast around 5 mph.
Thursday
Sunny, with a high near 72. East northeast wind 6 to 9 mph.
Thursday Night
Clear, with a low around 39. East northeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 73. Light and variable wind.
Friday Night
Partly cloudy, with a low around 52. Calm wind.
Saturday
Mostly sunny, with a high near 77. Calm wind becoming west southwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 51. Light southeast wind.
Sunday
Mostly sunny, with a high near 77. South southeast wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 54. Southeast wind 3 to 6 mph.
Columbus Day
Sunny, with a high near 79. South southeast wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 57. Light southeast wind.
Tuesday
Sunny, with a high near 79. Light and variable wind becoming west 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 54. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 81. Light and variable wind becoming south southeast 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Dahlgren IL
 38.17°N 88.7°W
Last Update:
11:46 pm CDT Oct 8, 2025
Forecast Valid:
12am CDT Oct 9, 2025-6pm CDT Oct 15, 2025
 
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Additional Resources

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Chance of Precipitation