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.

Fair

39°F

4°C

Humidity 24%
Wind Speed N 6 mph
Barometer 30.29 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 22 Jan 3:47 pm CST
Extended Forecast for

Whiteash IL

Cold Weather Advisory January 23, 06:00pm until January 25, 06:00pm
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

  • This Afternoon

    This Afternoon: Sunny, with a high near 42. Light north wind.

    High: 42 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 16. Light east wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 25 mph.

    Low: 16 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a temperature falling to around 14 by 5pm. Wind chill values as low as -1. North wind 11 to 17 mph, with gusts as high as 25 mph.

    High: 22 °F⇓

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Increasing clouds, with a low around 8. Wind chill values as low as -7. Northeast wind 13 to 15 mph, with gusts as high as 22 mph.

    Low: 8 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: Snow before 3pm, then snow, possibly mixed with sleet. High near 16. Northeast wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 16 °F

    Snow Likely
    then
    Snow/Sleet

  • Saturday Night

    Saturday Night: Snow, possibly mixed with sleet, becoming all snow after 9pm. The snow could be heavy at times. Low around 12. Northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.

    Low: 12 °F

    Snow/Sleet
    then Heavy
    Snow

  • Sunday

    Sunday: Snow, mainly before noon. High near 19. North northwest wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 19 °F

    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: A slight chance of snow before 8pm, then a slight chance of snow showers between 8pm and midnight. Mostly cloudy, with a low around 3. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 3 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 16. Northwest wind 6 to 9 mph becoming west southwest in the afternoon.

    High: 16 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 42. Light north wind.
Tonight
Increasing clouds, with a low around 16. Light east wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 25 mph.
Friday
Partly sunny, with a temperature falling to around 14 by 5pm. Wind chill values as low as -1. North wind 11 to 17 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of snow after midnight. Increasing clouds, with a low around 8. Wind chill values as low as -7. Northeast wind 13 to 15 mph, with gusts as high as 22 mph.
Saturday
Snow before 3pm, then snow, possibly mixed with sleet. High near 16. Northeast wind 11 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
Snow, possibly mixed with sleet, becoming all snow after 9pm. The snow could be heavy at times. Low around 12. Northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.
Sunday
Snow, mainly before noon. High near 19. North northwest wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday Night
A slight chance of snow before 8pm, then a slight chance of snow showers between 8pm and midnight. Mostly cloudy, with a low around 3. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 16. Northwest wind 6 to 9 mph becoming west southwest in the afternoon.
Monday Night
Mostly clear, with a low around 2. South southwest wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 30. Southwest wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 15. Southwest wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 29. West southwest wind 5 to 7 mph becoming north northwest in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
3:16 pm CST Jan 22, 2026
Forecast Valid:
4pm CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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