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.

Mostly Cloudy

65°F

18°C

Humidity 84%
Wind Speed S 8 mph
Barometer 30.00 in (1016.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 25 Dec 3:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Christmas Day

    Christmas Day: Patchy fog after 5pm. Otherwise, cloudy, with a steady temperature around 63. East southeast wind around 5 mph.

    High: 63 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy fog before 7pm. Otherwise, mostly cloudy, with a low around 60. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.

    Low: 60 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 72 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. Calm wind becoming southeast 5 to 9 mph in the morning.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight. Cloudy, with a low around 59. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 70. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 70 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 24. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Showers then
    Chance
    Rain/Snow

  • Monday

    Monday: Mostly sunny, with a high near 29. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 30 mph.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Sunny

Detailed Forecast

Christmas Day
Patchy fog after 5pm. Otherwise, cloudy, with a steady temperature around 63. East southeast wind around 5 mph.
Tonight
Patchy fog before 7pm. Otherwise, mostly cloudy, with a low around 60. Southeast wind 5 to 10 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 72. South southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 46. Light and variable wind.
Saturday
Partly sunny, with a high near 67. Calm wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
A 20 percent chance of showers after midnight. Cloudy, with a low around 59. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Sunday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 70. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 24. Northwest wind 15 to 18 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 29. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 17. Northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 34. Northwest wind 6 to 9 mph becoming west southwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 24. West southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 40. West wind 6 to 8 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:
3:16 pm CST Dec 25, 2025
Forecast Valid:
4pm CST Dec 25, 2025-6pm CST Dec 31, 2025
 
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