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.

Mostly Cloudy

82°F

28°C

Humidity 58%
Wind Speed S 16 G 25 mph
Barometer 29.91 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Apr 1:45 pm CDT
Extended Forecast for

Whiteash IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. South wind 14 to 16 mph, with gusts as high as 24 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 52. South wind around 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Slight Chance
    Showers then
    Showers

  • Saturday

    Saturday: Showers and thunderstorms before 4pm, then a slight chance of showers. Temperature falling to around 55 by 9am. South southwest wind 11 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    High: 65 °F⇓

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 38. North northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 69. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. West northwest wind around 6 mph becoming light and variable in the evening.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70. Light and variable wind becoming east around 6 mph in the morning.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 52. Southeast wind 5 to 7 mph.

    Low: 52 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. South wind 14 to 16 mph, with gusts as high as 24 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 52. South wind around 14 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Saturday
Showers and thunderstorms before 4pm, then a slight chance of showers. Temperature falling to around 55 by 9am. South southwest wind 11 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 38. North northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 69. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 42. West northwest wind around 6 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 70. Light and variable wind becoming east around 6 mph in the morning.
Monday Night
Clear, with a low around 52. Southeast wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 79. Southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
Partly cloudy, with a low around 57. Southwest wind 6 to 9 mph.
Wednesday
Sunny, with a high near 82. Southwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 60. South wind around 6 mph.
Thursday
Sunny, with a high near 84. South wind 6 to 13 mph, with gusts as high as 21 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:
1:26 pm CDT Apr 17, 2026
Forecast Valid:
2pm CDT Apr 17, 2026-6pm CDT Apr 23, 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