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

75°F

24°C

Humidity 57%
Wind Speed SW 18 G 32 mph
Barometer 30.00 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 30 Mar 3:45 pm CDT
Extended Forecast for

Whiteash IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. Breezy, with a south southwest wind around 21 mph, with gusts as high as 30 mph.

    High: 80 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 65. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 82. South southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 66 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 81 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 64. Breezy, with a south wind 13 to 20 mph, with gusts as high as 28 mph.

    Low: 64 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. South wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 79 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Breezy, with a south southwest wind around 21 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 65. South southwest wind 14 to 17 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 82. South southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 64. Breezy, with a south wind 13 to 20 mph, with gusts as high as 28 mph.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. South wind 11 to 14 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. South wind around 11 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. South wind 13 to 16 mph, with gusts as high as 24 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 44. West northwest wind 11 to 14 mph, with gusts as high as 20 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 60. West northwest wind around 14 mph, with gusts as high as 21 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
3:12 pm CDT Mar 30, 2026
Forecast Valid:
4pm CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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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