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.

Overcast

N/A

Humidity NA
Wind Speed W 6 G 17 mph
Barometer 30.19 in
Dewpoint N/A
Visibility 10.00 mi
Last update 30 Nov 3:56 am CST
Extended Forecast for

2 Miles SW Dahlgren IL

  • Today

    Today: Mostly cloudy, with a steady temperature around 28. West northwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 28 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 23 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow, mainly after 5pm. Cloudy, with a high near 36. Calm wind becoming east around 5 mph.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Snow

  • Monday Night

    Monday Night: Snow, mainly before midnight. Low around 23. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 80%.

    Low: 23 °F

    Snow then
    Chance Snow

  • Tuesday

    Tuesday: Partly sunny, with a high near 32. Northwest wind 5 to 7 mph becoming calm in the afternoon.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19. Light and variable wind.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. Light and variable wind becoming northwest 5 to 10 mph in the evening.

    Low: 19 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 27. North northwest wind 5 to 10 mph.

    High: 27 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a steady temperature around 28. West northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 23. Northwest wind 5 to 8 mph becoming calm in the evening.
Monday
A 30 percent chance of snow, mainly after 5pm. Cloudy, with a high near 36. Calm wind becoming east around 5 mph.
Monday Night
Snow, mainly before midnight. Low around 23. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 32. Northwest wind 5 to 7 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 19. Light and variable wind.
Wednesday
Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 19. Light and variable wind becoming northwest 5 to 10 mph in the evening.
Thursday
Partly sunny, with a high near 27. North northwest wind 5 to 10 mph.
Thursday Night
A chance of snow and freezing rain after midnight. Mostly cloudy, with a low around 16. Light and variable wind.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 33. Light and variable wind becoming south around 6 mph.
Friday Night
A chance of freezing rain. Mostly cloudy, with a low around 24. Calm wind becoming southwest around 5 mph after midnight.
Saturday
Partly sunny, with a high near 40. Southwest wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Dahlgren IL
 38.17°N 88.7°W
Last Update:
3:16 am CST Nov 30, 2025
Forecast Valid:
4am CST Nov 30, 2025-6pm CST Dec 6, 2025
 
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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