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.

Rain

44°F

7°C

Humidity 96%
Wind Speed SW 5 mph
Barometer 29.78 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 Jan 2:15 am CST
Extended Forecast for

Whiteash IL

  • Overnight

    Overnight: Showers likely, mainly before 3am. Cloudy, with a steady temperature around 47. West wind 5 to 7 mph. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 20 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 44 °F⇓

    Slight Chance
    Showers then
    Partly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 18. Northwest wind 7 to 15 mph, with gusts as high as 29 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 33. Northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 25. Light south southwest wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 46. West wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11. North northwest wind around 7 mph.

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely, mainly before 3am. Cloudy, with a steady temperature around 47. West wind 5 to 7 mph. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of showers before 7am. Cloudy, then gradually becoming mostly sunny, with a temperature falling to around 32 by 5pm. Breezy, with a north northwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Wednesday Night
Mostly clear, with a low around 18. Northwest wind 7 to 15 mph, with gusts as high as 29 mph.
Thursday
Sunny, with a high near 33. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 25. Light south southwest wind increasing to 9 to 14 mph in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 46. West wind 11 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 31. West wind 8 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 11. North northwest wind around 7 mph.
Sunday
Sunny, with a high near 27. Northwest wind 7 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 16. Southwest wind 8 to 10 mph.
M.L.King Day
Mostly sunny, with a high near 34. West wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 13. West northwest wind 5 to 8 mph.
Tuesday
Sunny, with a high near 35. West wind 5 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
1:16 am CST Jan 14, 2026
Forecast Valid:
2am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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