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

30°F

-1°C

Humidity 96%
Wind Speed Calm
Barometer 29.96 in (1015.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 27 Feb 12:56 am CST
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: Clear, with a low around 34. Calm wind.

    Low: 34 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 69. Light south southwest wind becoming southwest 6 to 11 mph in the morning.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. South wind 5 to 8 mph becoming north after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 33. South southeast wind 6 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 33 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 47. East northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 47 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain showers likely before 9pm, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 33. East northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    Low: 33 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 45. East northeast wind 7 to 10 mph.

    High: 45 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Cloudy, with a low around 36. East wind around 6 mph.

    Low: 36 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 34. Calm wind.
Friday
Sunny, with a high near 69. Light south southwest wind becoming southwest 6 to 11 mph in the morning.
Friday Night
Mostly clear, with a low around 41. South wind 5 to 8 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 65. Northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 33. South southeast wind 6 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.
Sunday
Mostly cloudy, with a high near 47. East northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before 9pm, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 33. East northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 45. East northeast wind 7 to 10 mph.
Monday Night
A chance of showers. Cloudy, with a low around 36. East wind around 6 mph.
Tuesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 55. Southeast wind 6 to 8 mph becoming northwest in the afternoon.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 44. North northwest wind around 7 mph becoming east after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 64. East wind 7 to 10 mph becoming south in the afternoon.
Wednesday Night
Showers and thunderstorms likely. Cloudy, with a low around 53. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 9 to 14 mph, with gusts as high as 22 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:
12:17 am CST Feb 27, 2026
Forecast Valid:
1am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation