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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

10°F

-12°C

Humidity 44%
Wind Speed N 14 mph
Barometer 30.63 in
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 23 Jan 5:45 pm CST
Extended Forecast for

Whiteash IL

Cold Weather Advisory 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
  •  
    Cold Weather Advisory until January 24, 01:00pm

    NOW until 1:00pm Sat

    Cold Weather Advisory

  • Tonight

    Low: 7 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Snow, mainly after 9am. High near 15. Wind chill values as low as -8. Northeast wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 15 °F

    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 12. Wind chill values as low as zero. Northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 12 °F

    Snow Likely
    then Snow

  • Sunday

    Sunday: Snow, possibly mixed with sleet, becoming all snow after noon. High near 17. Wind chill values as low as zero. North wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    High: 17 °F

    Snow/Sleet
    then Snow
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 1 °F

    Chance Snow
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 14. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 14 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 0. Light west wind becoming south southwest 5 to 9 mph in the evening. Winds could gust as high as 18 mph.

    Low: 0 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 26. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 26 °F

    Sunny

Detailed Forecast

Tonight
A 20 percent chance of snow after 4am. Increasing clouds, with a low around 7. Wind chill values as low as -7. North northeast wind 9 to 13 mph, with gusts as high as 22 mph.
Saturday
Snow, mainly after 9am. High near 15. Wind chill values as low as -8. Northeast wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday Night
Snow. Low around 12. Wind chill values as low as zero. Northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday
Snow, possibly mixed with sleet, becoming all snow after noon. High near 17. Wind chill values as low as zero. North wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 1. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 14. West northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 0. Light west wind becoming south southwest 5 to 9 mph in the evening. Winds could gust as high as 18 mph.
Tuesday
Sunny, with a high near 26. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 6. West southwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 24. Calm wind becoming west northwest 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 5. West southwest wind around 6 mph becoming north northwest after midnight.
Thursday
Partly sunny, with a high near 19. North northwest wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 3. North northwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 19. North northwest wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
3:16 pm CST Jan 23, 2026
Forecast Valid:
6pm CST Jan 23, 2026-6pm CST Jan 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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