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

69°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 30.19 in (1022.6 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 2 Oct 7:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. South wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Calm wind becoming south southeast 5 to 9 mph in the afternoon.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Southeast wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind 5 to 13 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. South southeast wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers. Mostly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the morning.

    High: 86 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 63. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 60. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 87. Calm wind becoming south southeast 5 to 9 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Southeast wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87. South wind 5 to 13 mph.
Sunday Night
Mostly clear, with a low around 61. South southeast wind around 6 mph becoming calm in the evening.
Monday
A slight chance of showers. Mostly sunny, with a high near 86. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers. Mostly sunny, with a high near 85. Calm wind becoming southwest 5 to 7 mph in the morning.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. South wind around 7 mph becoming north in the evening.
Wednesday
Mostly sunny, with a high near 74. North northeast wind 8 to 13 mph.
Wednesday Night
Mostly clear, with a low around 47. North northeast wind 6 to 8 mph.
Thursday
Sunny, with a high near 73. East northeast wind 6 to 8 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:
7:01 pm CDT Oct 2, 2025
Forecast Valid:
8pm CDT Oct 2, 2025-6pm CDT Oct 9, 2025
 
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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