National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

54°F

12°C

Humidity 59%
Wind Speed SW 7 mph
Barometer 29.93 in (1013.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 27 Feb 9:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Clear, with a low around 40. Southwest wind around 6 mph becoming light and variable.

    Low: 40 °F

    Clear

  • Saturday

    Saturday: A slight chance of showers between 2pm and 3pm. Increasing clouds, with a high near 65. Northeast wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 20%.

    High: 65 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers between 11pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 18 mph.

    Low: 34 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 47. Northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 47 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow showers. Cloudy, with a low around 33. East northeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 44. East wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 44 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 39. East wind 5 to 7 mph becoming south southeast after midnight. Chance of precipitation is 60%.

    Low: 39 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 60. South southwest wind 7 to 10 mph.

    High: 60 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 50. South wind around 8 mph becoming east southeast after midnight.

    Low: 50 °F

    Showers
    Likely

Detailed Forecast

Tonight
Clear, with a low around 40. Southwest wind around 6 mph becoming light and variable.
Saturday
A slight chance of showers between 2pm and 3pm. Increasing clouds, with a high near 65. Northeast wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of showers between 11pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Sunday
Increasing clouds, with a high near 47. Northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
Rain likely, possibly mixed with snow showers. Cloudy, with a low around 33. East northeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday
A 40 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 44. East wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 39. East wind 5 to 7 mph becoming south southeast after midnight. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 60. South southwest wind 7 to 10 mph.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 50. South wind around 8 mph becoming east southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 64. South southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 53. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 67. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 53. South wind around 8 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
9:36 pm CST Feb 27, 2026
Forecast Valid:
10pm CST Feb 27, 2026-6pm CST Mar 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