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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Nason IL

Cold Weather Advisory January 30, 09:00pm until January 31, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: A chance of flurries between 7pm and 3am. Mostly cloudy, with a low around 4. Wind chill values as low as -9. North wind 7 to 9 mph.

    Low: 4 °F

    Chance
    Flurries

  • Saturday

    Saturday: Partly sunny, with a high near 19. Wind chill values as low as -11. Northwest wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 19 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 0. Northwest wind around 6 mph becoming calm in the evening.

    Low: 0 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 28. Wind chill values as low as zero. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 28 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. South wind 3 to 6 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 37. West wind 3 to 6 mph.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. Light and variable wind.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow showers after noon. Cloudy, with a high near 39. South southeast wind around 6 mph becoming north northeast in the afternoon.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 24. North wind around 6 mph.

    Low: 24 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
A chance of flurries between 7pm and 3am. Mostly cloudy, with a low around 4. Wind chill values as low as -9. North wind 7 to 9 mph.
Saturday
Partly sunny, with a high near 19. Wind chill values as low as -11. Northwest wind 8 to 13 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 0. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Increasing clouds, with a high near 28. Wind chill values as low as zero. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 18. South wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 37. West wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 25. Light and variable wind.
Tuesday
A chance of rain and snow showers after noon. Cloudy, with a high near 39. South southeast wind around 6 mph becoming north northeast in the afternoon.
Tuesday Night
A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 24. North wind around 6 mph.
Wednesday
Mostly cloudy, with a high near 32. North wind 6 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 15. North wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 33. Light and variable wind becoming west northwest around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 24. South southwest wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 41. West northwest wind 8 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nason IL
 38.18°N 88.98°W
Last Update:
3:16 pm CST Jan 30, 2026
Forecast Valid:
6pm CST Jan 30, 2026-6pm CST Feb 6, 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