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

37°F

3°C

Humidity 76%
Wind Speed SW 5 mph
Barometer 30.04 in (1018.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Nov 4:56 am CST
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Sunny, with a high near 64. West northwest wind 6 to 10 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 37. Light west wind.

    Low: 37 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 63. Calm wind becoming south around 6 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. South wind 3 to 6 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73. South southwest wind 6 to 9 mph.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 55. South southwest wind 6 to 9 mph.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. South southwest wind 10 to 16 mph, with gusts as high as 23 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. Southwest wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63. Northwest wind 5 to 10 mph.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 64. West northwest wind 6 to 10 mph.
Tonight
Mostly clear, with a low around 37. Light west wind.
Thursday
Mostly sunny, with a high near 63. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 46. South wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 73. South southwest wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 55. South southwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 75. South southwest wind 10 to 16 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 47. Southwest wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Sunday
Sunny, with a high near 63. Northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 39. Calm wind becoming east northeast around 5 mph after midnight.
Monday
A chance of showers. Mostly sunny, with a high near 58. East northeast wind 5 to 9 mph becoming southeast in the afternoon.
Monday Night
Showers likely. Mostly cloudy, with a low around 43. East wind 6 to 8 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 60. Southeast wind 7 to 9 mph becoming northwest in the morning.
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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:
5:21 am CST Nov 12, 2025
Forecast Valid:
5am CST Nov 12, 2025-6pm CST Nov 18, 2025
 
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Additional Resources

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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