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.

Overcast

74°F

23°C

Humidity 79%
Wind Speed Calm
Barometer 29.99 in (1015.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 21 Sep 4:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. North northeast wind 3 to 8 mph.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 77. North northeast wind 5 to 10 mph.

    High: 77 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57. North northeast wind 5 to 9 mph becoming light.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 77. North wind 5 to 10 mph.

    High: 77 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. North northeast wind 5 to 8 mph becoming calm in the evening.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Calm wind becoming northeast 5 to 7 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. North northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Calm wind becoming northeast 5 to 8 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. North northeast wind 3 to 8 mph.
Tuesday
Mostly cloudy, with a high near 77. North northeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 57. North northeast wind 5 to 9 mph becoming light.
Wednesday
Partly sunny, with a high near 77. North wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 55. North northeast wind 5 to 8 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 79. Calm wind becoming northeast 5 to 7 mph in the morning.
Thursday Night
Partly cloudy, with a low around 56. North northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 79. Calm wind becoming northeast 5 to 8 mph in the morning.
Friday Night
Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 78. Light east wind.
Saturday Night
Mostly cloudy, with a low around 55. Calm wind.
Sunday
Mostly sunny, with a high near 80. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. Calm wind.
Monday
Mostly sunny, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon.
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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:
1:26 pm CDT Sep 21, 2026
Forecast Valid:
5pm CDT Sep 21, 2026-6pm CDT Sep 28, 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