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.

Overcast

72°F

22°C

Humidity 61%
Wind Speed S 9 mph
Barometer 30.08 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 13 Apr 7:45 am CDT
Extended Forecast for

Whiteash IL

  • Today

    Today: Mostly sunny, with a high near 82. South southwest wind 9 to 17 mph, with gusts as high as 29 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 28 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 69. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 85. South southwest wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South southwest wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63. South southwest wind 5 to 7 mph.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 87. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. South southwest wind 9 to 17 mph, with gusts as high as 29 mph.
Tonight
Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 87. South southwest wind 14 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 69. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 85. South southwest wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South southwest wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 63. South southwest wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 87. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. South wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. South southwest wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Northwest wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 65. Northwest wind 8 to 10 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:
8:42 am CDT Apr 13, 2026
Forecast Valid:
8am CDT Apr 13, 2026-6pm CDT Apr 19, 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