National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Bering Sea Storms in Alaska; Heavy Rain in Hawaii; Severe Thunderstorms in the Upper Mississippi Valley

A series of Bering Sea storms continues to impact western Alaska this week, with elevated water levels, isolated coastal flooding, high surf, erosion, and strong winds. Tropical moisture will bring the potential for heavy rain and thunderstorms to Hawaii through early Thursday. A few severe thunderstorms are possible over the Upper Mississippi Valley today with some tornado potential. Read More >

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

71°F

22°C

Humidity 47%
Wind Speed S 6 mph
Barometer 30.17 in (1022.0 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 28 Oct 5:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Clear, with a low around 52. South wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Southwest wind 5 to 9 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 75. Calm wind becoming east around 6 mph in the afternoon.

    High: 75 °F

    Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 69. Calm wind becoming southeast 5 to 9 mph in the morning.

    High: 69 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 54. Southeast wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 52. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 82. Southwest wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 55. Calm wind.
Friday
Mostly sunny, with a high near 80. Calm wind becoming east southeast around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 57. Calm wind.
Saturday
Cloudy, with a high near 75. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 69. Calm wind becoming southeast 5 to 9 mph in the morning.
Sunday Night
A slight chance of showers before 1am. Mostly cloudy, with a low around 54. Southeast wind around 6 mph becoming calm in the evening.
Monday
A chance of showers, mainly after 1pm. Mostly cloudy, with a high near 71. Light southeast wind becoming south southeast 5 to 10 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South southeast wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South southeast wind 11 to 17 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Southeast wind 7 to 11 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 71. South southeast wind 9 to 13 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.33°N 88.91°W
Last Update:
3:01 pm CDT Oct 28, 2026
Forecast Valid:
6pm CDT Oct 28, 2026-6pm CST Nov 4, 2026
 
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