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.

Overcast

45°F

7°C

Humidity 93%
Wind Speed N 10 G 21 mph
Barometer 30.09 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 27 Mar 6:45 am CDT
Extended Forecast for

Marion IL

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Today

    Today: Showers likely, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    High: 53 °F

    Showers
    Likely then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 32. North wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 58. North northeast wind around 6 mph becoming east southeast in the afternoon.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. Southeast wind 3 to 5 mph.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. South wind around 9 mph, with gusts as high as 18 mph.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. South southwest wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Showers likely, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Tonight
Mostly clear, with a low around 32. North wind 6 to 14 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 58. North northeast wind around 6 mph becoming east southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 40. Southeast wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 69. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 57. South wind around 9 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 80. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 64. South southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 84. South southwest wind 13 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
A chance of showers after 1am. Mostly cloudy, with a low around 65. South wind around 14 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. South wind 11 to 13 mph, with gusts as high as 22 mph.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 71. South southwest wind around 14 mph, with gusts as high as 23 mph.
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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:
4:51 am CDT Mar 27, 2026
Forecast Valid:
7am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation