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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

43°F

6°C

Humidity 61%
Wind Speed NE 3 mph
Barometer 30.10 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 13 Mar 11:55 pm CDT
Extended Forecast for

Marion IL

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northeast wind around 5 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. East northeast wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 25 mph.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 18 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 60%.

    High: 72 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 18 to 24 mph becoming west in the evening. Winds could gust as high as 39 mph. Chance of precipitation is 100%.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 33. Breezy, with a west northwest wind around 21 mph, with gusts as high as 32 mph.

    High: 33 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 15. West northwest wind 9 to 18 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 39. West northwest wind around 8 mph.

    High: 39 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 28. South wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Northeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 67. East northeast wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 55. South wind 7 to 14 mph, with gusts as high as 25 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 72. Breezy, with a south wind 18 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 18 to 24 mph becoming west in the evening. Winds could gust as high as 39 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 33. Breezy, with a west northwest wind around 21 mph, with gusts as high as 32 mph.
Monday Night
Mostly clear, with a low around 15. West northwest wind 9 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 39. West northwest wind around 8 mph.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 28. South wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday
Partly sunny, with a high near 58. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 41. South southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 69. West wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 47. South southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 70. South wind 6 to 9 mph becoming west in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
11:21 pm CDT Mar 13, 2026
Forecast Valid:
11pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation