National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

34°F

1°C

Humidity 38%
Wind Speed NW 17 G 30 mph
Barometer 30.42 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 22 Feb 4:45 pm CST
Extended Forecast for

5 Miles SW Marion IL

  • Tonight

    Tonight: Increasing clouds, with a low around 16. North northwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 16 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 34. North northwest wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 34 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Calm wind becoming south around 5 mph after midnight.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Breezy, with a south southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 50 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind 6 to 16 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58. Southwest wind around 6 mph becoming south southeast in the afternoon.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 42. South southeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    Low: 42 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, mainly before noon. Partly sunny, with a high near 53. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 53 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 16. North northwest wind around 14 mph, with gusts as high as 23 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 34. North northwest wind 6 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 20. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 50. Breezy, with a south southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind 6 to 16 mph, with gusts as high as 26 mph.
Wednesday
Partly sunny, with a high near 58. Southwest wind around 6 mph becoming south southeast in the afternoon.
Wednesday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 42. South southeast wind 6 to 10 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Thursday
A chance of showers, mainly before noon. Partly sunny, with a high near 53. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 59. Calm wind becoming south southwest 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 39. South wind around 6 mph.
Saturday
Sunny, with a high near 64. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 34. Southwest wind around 9 mph becoming north after midnight. Winds could gust as high as 18 mph.
Sunday
A slight chance of showers. Partly sunny, with a high near 53. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Marion IL
 37.67°N 88.98°W
Last Update:
4:31 pm CST Feb 22, 2026
Forecast Valid:
5pm CST Feb 22, 2026-6pm CST Mar 1, 2026
 
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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