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

55°F

13°C

Humidity 55%
Wind Speed E 6 mph
Barometer 29.83 in (1010.4 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 14 Mar 10:56 pm CDT
Extended Forecast for

Mount Vernon IL

Wind Advisory March 15, 10:00am until March 16, 07:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 53. East southeast wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 69. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%.

    High: 69 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 10pm, then rain and snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Some thunder is also possible. Low around 23. Breezy, with a west wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: Mostly cloudy, with a high near 31. Blustery, with a west northwest wind around 22 mph, with gusts as high as 39 mph.

    High: 31 °F

    Mostly Cloudy
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. West northwest wind 10 to 17 mph, with gusts as high as 26 mph.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 37. Northwest wind around 7 mph becoming west southwest in the afternoon.

    High: 37 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers after 1am. Mostly cloudy, with a low around 29. Light south wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60. Southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39. South southwest wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. East southeast wind 6 to 11 mph becoming south after midnight. Winds could gust as high as 21 mph.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 69. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before 10pm, then rain and snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Some thunder is also possible. Low around 23. Breezy, with a west wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 31. Blustery, with a west northwest wind around 22 mph, with gusts as high as 39 mph.
Monday Night
Partly cloudy, with a low around 14. West northwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday
Sunny, with a high near 37. Northwest wind around 7 mph becoming west southwest in the afternoon.
Tuesday Night
A 30 percent chance of snow showers after 1am. Mostly cloudy, with a low around 29. Light south wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 23 mph.
Wednesday
Mostly sunny, with a high near 60. Southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 39. South southwest wind 3 to 6 mph.
Thursday
Sunny, with a high near 70. Southwest wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 46. South wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 71. South wind 5 to 8 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 48. West wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 76. West northwest wind 7 to 10 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:
9:06 pm CDT Mar 14, 2026
Forecast Valid:
11pm CDT Mar 14, 2026-6pm CDT Mar 21, 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