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.

Partly Cloudy

75°F

24°C

Humidity 55%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 24 Aug 8:15 pm CDT
Extended Forecast for

Whiteash IL

  • Tonight

    Tonight: Mostly clear, with a low around 62. Light east wind.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67. Light and variable wind.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 90. Light west northwest wind becoming north northwest 5 to 10 mph in the morning.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. North wind 5 to 7 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Calm wind becoming north northeast 5 to 8 mph in the afternoon.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. North northeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 62. Light east wind.
Tuesday
Mostly sunny, with a high near 89. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 67. Light and variable wind.
Wednesday
Mostly sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 68. Calm wind.
Thursday
Sunny, with a high near 90. Light west northwest wind becoming north northwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 66. North wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 90. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Friday Night
Mostly clear, with a low around 65. North northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 95. Calm wind becoming south southwest 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 96. Southwest wind 6 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
5:36 pm CDT Aug 24, 2026
Forecast Valid:
8pm CDT Aug 24, 2026-6pm CDT Aug 31, 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