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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

19°F

-7°C

Humidity 53%
Wind Speed N 17 mph
Barometer 30.55 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 23 Jan 8:47 am CST
Extended Forecast for

4 Miles SSE Tunnel Hill IL

Cold Weather Advisory January 23, 06:00pm until January 24, 01:00pm
Winter Storm Warning January 24, 12:00am until January 25, 06:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning

  • Today

    Today: Mostly sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as -1. North wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 20 °F⇓

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 5am. Increasing clouds, with a low around 8. Wind chill values as low as -8. North northeast wind around 14 mph, with gusts as high as 24 mph.

    Low: 8 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow showers. High near 14. Wind chill values as low as -5. Northeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 14 °F

    Snow Showers

  • Saturday Night

    Saturday Night: Snow showers, possibly mixed with sleet before midnight, then snow showers between midnight and 3am, then snow showers, possibly mixed with sleet after 3am. Low around 12. Wind chill values as low as zero. Northeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 12 °F

    Snow/Sleet

  • Sunday

    Sunday: Snow showers, possibly mixed with sleet, becoming all snow after 9am. High near 16. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 16 °F

    Snow/Sleet
    then Chance
    Snow Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 2. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 2 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 16. Northwest wind 3 to 7 mph.

    High: 16 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 2. South southwest wind 3 to 7 mph.

    Low: 2 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. Southwest wind 5 to 7 mph.

    High: 27 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a temperature falling to around 13 by 5pm. Wind chill values as low as -1. North wind 13 to 17 mph, with gusts as high as 28 mph.
Tonight
A 30 percent chance of snow, mainly after 5am. Increasing clouds, with a low around 8. Wind chill values as low as -8. North northeast wind around 14 mph, with gusts as high as 24 mph.
Saturday
Snow showers. High near 14. Wind chill values as low as -5. Northeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Saturday Night
Snow showers, possibly mixed with sleet before midnight, then snow showers between midnight and 3am, then snow showers, possibly mixed with sleet after 3am. Low around 12. Wind chill values as low as zero. Northeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Sunday
Snow showers, possibly mixed with sleet, becoming all snow after 9am. High near 16. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Sunday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 2. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 16. Northwest wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 2. South southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 27. Southwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 11. Light and variable wind.
Wednesday
Partly sunny, with a high near 26. Northwest wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 4. West northwest wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 19. Northwest wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Tunnel Hill IL
 37.51°N 88.85°W
Last Update:
7:27 am CST Jan 23, 2026
Forecast Valid:
9am CST Jan 23, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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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