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

75°F

24°C

Humidity 31%
Wind Speed SW 17 G 25 mph
Barometer 30.05 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 21 Apr 5:47 pm CDT
Extended Forecast for

Whiteash IL

  • Tonight

    Tonight: Clear, with a low around 55. South southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 77. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 58 °F

    Showers
    Likely

  • Saturday

    Saturday: A slight chance of showers. Partly sunny, with a high near 78. North northeast wind 5 to 8 mph.

    High: 78 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 55. East northeast wind 3 to 5 mph.

    Low: 55 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 55. South southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 6 mph.
Thursday
Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 20 mph.
Friday
Showers and possibly a thunderstorm. High near 77. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 58. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
A slight chance of showers. Partly sunny, with a high near 78. North northeast wind 5 to 8 mph.
Saturday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 55. East northeast wind 3 to 5 mph.
Sunday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. East wind 5 to 8 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. East southeast wind 7 to 10 mph, with gusts as high as 18 mph.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 80. South wind 11 to 15 mph, with gusts as high as 23 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56. South southwest wind 8 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 74. West northwest wind 8 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
4:26 pm CDT Apr 21, 2026
Forecast Valid:
6pm CDT Apr 21, 2026-6pm CDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation