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.

Fog/Mist

28°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 27°F (-3°C)
Visibility 2.50 mi
Last update 1 Jan 11:55 pm CST
Extended Forecast for

Whiteash IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 41. Northeast wind 3 to 7 mph.

    High: 41 °F

    Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 30. Northeast wind around 6 mph.

    Low: 30 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 43. North northeast wind 5 to 7 mph.

    High: 43 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Light north northwest wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 43. Light and variable wind.

    High: 43 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45. South southwest wind 7 to 9 mph.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. Calm wind.
Friday
Cloudy, with a high near 41. Northeast wind 3 to 7 mph.
Friday Night
Cloudy, with a low around 30. Northeast wind around 6 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 43. North northeast wind 5 to 7 mph.
Saturday Night
Mostly clear, with a low around 25. Light north northwest wind.
Sunday
Mostly sunny, with a high near 43. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 32. Calm wind becoming south southwest 5 to 7 mph after midnight.
Monday
Mostly sunny, with a high near 56. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 45. South southwest wind 7 to 9 mph.
Tuesday
Partly sunny, with a high near 62. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 42. Southwest wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
Partly sunny, with a high near 59. Light and variable wind becoming west southwest around 6 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 44. Calm wind becoming south southeast around 6 mph after midnight.
Thursday
A chance of showers. Mostly cloudy, with a high near 60. South southeast 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 88.92°W
Last Update:
10:51 pm CST Jan 1, 2026
Forecast Valid:
12am CST Jan 2, 2026-6pm CST Jan 8, 2026
 
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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