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

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

49°F

9°C

Humidity 57%
Wind Speed S 5 mph
Barometer 30.10 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 18 Mar 9:55 pm CDT
Extended Forecast for

Whiteash IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. South southwest wind around 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 72. South wind around 6 mph becoming west northwest in the afternoon.

    High: 72 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 50. Light and variable wind.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 79. Southwest wind 3 to 8 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. Southwest wind around 6 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. West wind 3 to 6 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. South southwest wind 3 to 7 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. North wind around 14 mph, with gusts as high as 23 mph.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. South southwest wind around 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 72. South wind around 6 mph becoming west northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 50. Light and variable wind.
Friday
Mostly sunny, with a high near 79. Southwest wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 53. Southwest wind around 6 mph.
Saturday
Sunny, with a high near 80. West wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 58. South southwest wind 3 to 7 mph.
Sunday
Sunny, with a high near 84. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 41. North wind around 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 56. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 36. East northeast wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 61. East southeast wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 42. East southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 70. South wind 7 to 11 mph, with gusts as high as 18 mph.
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:
9:21 pm CDT Mar 18, 2026
Forecast Valid:
10pm CDT Mar 18, 2026-6pm CDT Mar 25, 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