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.

Drizzle

72°F

22°C

Humidity 100%
Wind Speed SW 6 mph
Barometer 30.15 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 6 Aug 11:45 am CDT
Extended Forecast for

Whiteash IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms, mainly before 3pm. Mostly cloudy, with a high near 84. West wind around 6 mph becoming south southeast.

    High: 84 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 71. Light south southeast wind.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 90 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 72 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.

    High: 92 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. South southwest wind 3 to 8 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South wind 5 to 7 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. South southwest wind 7 to 14 mph, with gusts as high as 20 mph.

    High: 95 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms, mainly before 3pm. Mostly cloudy, with a high near 84. West wind around 6 mph becoming south southeast.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 71. Light south southeast wind.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 90. Calm wind becoming southwest 5 to 8 mph in the morning.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 72. Calm wind.
Sunday
Sunny, with a high near 95. South southwest wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 74. South wind 5 to 7 mph.
Monday
Sunny, with a high near 95. South southwest wind 7 to 14 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 76. South southwest wind 10 to 13 mph, with gusts as high as 18 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96. South southwest wind 8 to 11 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. South southwest wind 7 to 10 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.95°W
Last Update:
11:41 am CDT Aug 6, 2026
Forecast Valid:
12pm CDT Aug 6, 2026-6pm CDT Aug 12, 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