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.

Fair

79°F

26°C

Humidity 54%
Wind Speed S 9 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 May 7:56 pm CDT
Extended Forecast for

5 Miles E Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around 70. South wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 70 °F

    Mostly Clear

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 5pm. Mostly sunny, with a high near 86. South southwest wind 11 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 86 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 70. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely then
    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. South southwest wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 86 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 60. West southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 90%.

    Low: 60 °F

    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers. Mostly cloudy, with a high near 72. North wind around 9 mph.

    High: 72 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 52. Northeast wind 6 to 8 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 73. East northeast wind around 8 mph.

    High: 73 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 56. East wind 3 to 6 mph.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 70. South wind 10 to 13 mph, with gusts as high as 22 mph.
Monday
Showers and thunderstorms likely, mainly after 5pm. Mostly sunny, with a high near 86. South southwest wind 11 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely, mainly before 10pm. Partly cloudy, with a low around 70. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 86. South southwest wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 60. West southwest wind 5 to 8 mph becoming light and variable. Chance of precipitation is 90%.
Wednesday
A 20 percent chance of showers. Mostly cloudy, with a high near 72. North wind around 9 mph.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52. Northeast wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 73. East northeast wind around 8 mph.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 56. East wind 3 to 6 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. East southeast wind around 6 mph becoming southwest in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Mount Vernon IL
 38.33°N 88.83°W
Last Update:
8:01 pm CDT May 17, 2026
Forecast Valid:
8pm CDT May 17, 2026-6pm CDT May 24, 2026
 
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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