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

26°F

-3°C

Humidity 71%
Wind Speed SW 5 mph
Barometer 30.06 in (1019.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 31 Dec 2:56 am CST
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: Mostly clear, with a low around 26. West wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. West northwest wind 6 to 10 mph.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. West southwest wind around 5 mph becoming calm in the evening.

    Low: 25 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 39. Northeast wind around 5 mph becoming calm in the morning.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 43. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 43 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. North northeast wind 3 to 5 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40. North northeast wind 3 to 5 mph.

    High: 40 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 26. West wind around 6 mph.
Wednesday
Partly sunny, with a high near 41. West northwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 25. West southwest wind around 5 mph becoming calm in the evening.
New Year's Day
Mostly sunny, with a high near 39. Northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly cloudy, with a low around 28. Calm wind.
Friday
Mostly cloudy, with a high near 43. Calm wind becoming northeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 26. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 40. North northeast wind 3 to 5 mph.
Saturday Night
Mostly clear, with a low around 23. Calm wind.
Sunday
Partly sunny, with a high near 44. Calm wind becoming south around 5 mph.
Sunday Night
Partly cloudy, with a low around 32. South wind 3 to 6 mph.
Monday
Partly sunny, with a high near 55. South southwest wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 36. South wind around 5 mph becoming west after midnight.
Tuesday
Partly sunny, with a high near 53. West wind 3 to 6 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:
1:36 am CST Dec 31, 2025
Forecast Valid:
3am CST Dec 31, 2025-6pm CST Jan 6, 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