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

N/A

Humidity NA
Wind Speed Vrbl 5 mph
Barometer 30.03 in
Dewpoint N/A
Visibility 10.00 mi
Last update 16 Nov 8:56 am CST
Extended Forecast for

2 Miles NNW Nason IL

  • Today

    Today: Sunny, with a high near 59. North northwest wind 5 to 9 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 60. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 60 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 47. Southeast wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 47 °F

    Chance
    Showers then
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph. Chance of precipitation is 60%.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 53. South southwest wind 5 to 7 mph. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 69. West southwest wind 5 to 7 mph.

    High: 69 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 53. Calm wind becoming southeast around 6 mph after midnight.

    Low: 53 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 68. South southeast wind 6 to 11 mph.

    High: 68 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 59. North northwest wind 5 to 9 mph.
Tonight
Mostly clear, with a low around 33. Calm wind.
Monday
Increasing clouds, with a high near 60. Calm wind becoming southeast 5 to 8 mph in the morning.
Monday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 47. Southeast wind 6 to 8 mph. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 53. South southwest wind 5 to 7 mph. Chance of precipitation is 40%.
Wednesday
A 30 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 69. West southwest wind 5 to 7 mph.
Wednesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 53. Calm wind becoming southeast around 6 mph after midnight.
Thursday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 68. South southeast wind 6 to 11 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 56. South wind 8 to 10 mph.
Friday
Showers likely. Partly sunny, with a high near 68. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 42. West southwest wind 7 to 10 mph becoming northwest after midnight.
Saturday
A slight chance of showers. Partly sunny, with a high near 56. West northwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Nason IL
 38.2°N 88.98°W
Last Update:
9:21 am CST Nov 16, 2025
Forecast Valid:
9am CST Nov 16, 2025-6pm CST Nov 22, 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