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.

Partly Cloudy

54°F

12°C

Humidity 47%
Wind Speed NW 8 mph
Barometer 30.09 in (1019.3 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 18 Apr 5:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. West northwest wind around 6 mph becoming calm after midnight.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 65. Calm wind becoming east around 5 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. Southeast wind 3 to 6 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 66. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 41. West northwest wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 65. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 48. Southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 77. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 60. South wind around 5 mph.
Thursday
Mostly sunny, with a high near 82. South wind 6 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 22 mph.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77. South wind 11 to 15 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. West southwest wind around 10 mph becoming northwest after midnight. Winds could gust as high as 18 mph.
Saturday
A slight chance of showers. Mostly sunny, with a high near 70. North northwest wind 9 to 11 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
3:02 pm CDT Apr 18, 2026
Forecast Valid:
6pm CDT Apr 18, 2026-6pm CDT Apr 25, 2026
 
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Additional Resources

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