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.

Mostly Cloudy

43°F

6°C

Humidity 80%
Wind Speed Vrbl 3 mph
Barometer 29.75 in (1007.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 14 Jan 6:56 am CST
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 30 by 5pm. North northwest wind 10 to 17 mph, with gusts as high as 31 mph.

    High: 42 °F⇓

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 18. North northwest wind 7 to 13 mph, with gusts as high as 28 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 32. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 24. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.

    Low: 24 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Friday

    Friday: Partly sunny, with a high near 44. West wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 28. West northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    High: 28 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9. Northwest wind around 7 mph.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 25. West southwest wind 7 to 10 mph.

    High: 25 °F

    Mostly Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 30 by 5pm. North northwest wind 10 to 17 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 18. North northwest wind 7 to 13 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 32. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 24. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 44. West wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 20. West wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 28. West northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 9. Northwest wind around 7 mph.
Sunday
Mostly sunny, with a high near 25. West southwest wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around 14. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.
M.L.King Day
Mostly sunny, with a high near 31. West wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 12. West northwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 33. West wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
6:11 am CST Jan 14, 2026
Forecast Valid:
7am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
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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