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

53°F

12°C

Humidity 96%
Wind Speed Calm
Barometer 30.26 in (1025.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 2 Jun 11:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: Mostly clear, with a low around 54. Light east northeast wind.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. East southeast wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. Light southeast wind.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. South wind 3 to 8 mph.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 68. South wind 5 to 11 mph, with gusts as high as 18 mph.

    Low: 68 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 88. Southwest wind 6 to 9 mph.

    High: 88 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.

    Low: 70 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Light east northeast wind.
Wednesday
Sunny, with a high near 82. East southeast wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 61. Light southeast wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 64. South wind 3 to 8 mph.
Friday
Sunny, with a high near 86. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 68. South wind 5 to 11 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 88. Southwest wind 6 to 9 mph.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Light south wind.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light east southeast wind.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. East southeast wind 3 to 7 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. East southeast wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
12:31 am CDT Jun 3, 2026
Forecast Valid:
12am CDT Jun 3, 2026-6pm CDT Jun 9, 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