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

N/A

Humidity NA
Wind Speed SE 8 mph
Barometer 30.05 in
Dewpoint N/A
Visibility 10.00 mi
Last update 17 Nov 2:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. East southeast wind around 8 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after midnight. Increasing clouds, with a low around 48. East southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms, mainly before 11am. High near 70. South southeast wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 48. North northeast wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 61. Light north wind.

    High: 61 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely, then showers and possibly a thunderstorm after noon. High near 65. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 90%.

    High: 65 °F

    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Cloudy, with a low around 54. Light and variable wind becoming east southeast 5 to 7 mph after midnight.

    Low: 54 °F

    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 64. East wind 7 to 11 mph.

    High: 64 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 60. East southeast wind around 8 mph.
Tonight
A chance of showers, with thunderstorms also possible after midnight. Increasing clouds, with a low around 48. East southeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Tuesday
Showers and thunderstorms, mainly before 11am. High near 70. South southeast wind 6 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 48. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 61. Light north wind.
Wednesday Night
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 47. Calm wind.
Thursday
Showers likely, then showers and possibly a thunderstorm after noon. High near 65. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm. Cloudy, with a low around 54. Light and variable wind becoming east southeast 5 to 7 mph after midnight.
Friday
Showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 64. East wind 7 to 11 mph.
Friday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 44. North northeast wind around 7 mph.
Saturday
Mostly sunny, with a high near 57. Northwest wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 39. Light west wind.
Sunday
Mostly sunny, with a high near 60. Calm wind becoming west southwest around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
3:16 pm CST Nov 17, 2025
Forecast Valid:
3pm CST Nov 17, 2025-6pm CST Nov 23, 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