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.

Mostly Cloudy

44°F

7°C

Humidity 77%
Wind Speed NE 5 mph
Barometer 30.27 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Apr 4:15 am CDT
Extended Forecast for

Whiteash IL

  • Today

    Today: Sunny, with a high near 69. Light and variable wind becoming east around 6 mph.

    High: 69 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. South wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South wind around 11 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 77. South wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 69. Light and variable wind becoming east around 6 mph.
Tonight
Mostly clear, with a low around 51. Calm wind becoming south 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 7 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 79. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Clear, with a low around 56. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 81. South wind 6 to 16 mph, with gusts as high as 25 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. South wind around 11 mph, with gusts as high as 22 mph.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 77. South wind 11 to 14 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. Southwest wind 6 to 8 mph becoming north northwest after midnight.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. North wind 7 to 9 mph.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. North northeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. North northeast wind 7 to 9 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:
4:26 am CDT Apr 20, 2026
Forecast Valid:
4am CDT Apr 20, 2026-6pm CDT Apr 26, 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