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.

Clear

59°F

15°C

Humidity 48%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 26 Feb 2:45 pm CST
Extended Forecast for

Whiteash IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. Light northeast wind.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Clear

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 69. Light south wind becoming southwest 6 to 11 mph in the morning.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 43. South southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 43 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. North northwest wind 5 to 8 mph becoming south southeast in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 35. South wind 7 to 11 mph becoming north in the evening. Winds could gust as high as 18 mph.

    Low: 35 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 47. Northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Rain and snow showers likely. Cloudy, with a low around 34. Northeast wind around 10 mph.

    Low: 34 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before noon. Mostly cloudy, with a high near 45. East northeast wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 45 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 57. Light northeast wind.
Tonight
Clear, with a low around 37. Light and variable wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 69. Light south wind becoming southwest 6 to 11 mph in the morning.
Friday Night
Clear, with a low around 43. South southwest wind 5 to 7 mph becoming northwest after midnight.
Saturday
Mostly sunny, with a high near 67. North northwest wind 5 to 8 mph becoming south southeast in the afternoon.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 35. South wind 7 to 11 mph becoming north in the evening. Winds could gust as high as 18 mph.
Sunday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 47. Northeast wind around 11 mph, with gusts as high as 18 mph.
Sunday Night
Rain and snow showers likely. Cloudy, with a low around 34. Northeast wind around 10 mph.
Monday
A chance of rain and snow showers before noon. Mostly cloudy, with a high near 45. East northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Monday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 33. East wind around 7 mph.
Tuesday
A chance of showers. Cloudy, with a high near 52. East wind 6 to 8 mph becoming south southwest in the afternoon.
Tuesday Night
Showers likely. Cloudy, with a low around 42. South wind around 7 mph.
Wednesday
A chance of showers. Cloudy, with a high near 61. South wind 7 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
1:11 pm CST Feb 26, 2026
Forecast Valid:
3pm CST Feb 26, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation