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.

Fair

65°F

18°C

Humidity 76%
Wind Speed SW 10 mph
Barometer 29.97 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 1 Apr 3:35 am CDT
Extended Forecast for

Whiteash IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 66. South southwest wind around 8 mph, with gusts as high as 18 mph.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 79. Southwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 66. South wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 16 to 24 mph, with gusts as high as 39 mph.

    High: 80 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Breezy, with a south southwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 70. South southwest wind around 14 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 70 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 66. South southwest wind around 8 mph, with gusts as high as 18 mph.
Wednesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 79. Southwest wind 7 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 66. South wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 16 to 24 mph, with gusts as high as 39 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Breezy, with a south southwest wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. South wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 70. South southwest wind around 14 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 41. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 58. Northwest wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. North northwest wind 5 to 9 mph becoming calm after midnight.
Monday
Sunny, with a high near 65. Calm wind becoming east southeast around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 43. Light southwest wind.
Tuesday
Sunny, with a high near 63. North wind 5 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Whiteash IL
 37.78°N 88.92°W
Last Update:
3:22 am CDT Apr 1, 2026
Forecast Valid:
3am CDT Apr 1, 2026-6pm CDT Apr 7, 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