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

50°F

10°C

Humidity 62%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 12 Nov 6:45 pm CST
Extended Forecast for

4 Miles ESE Marion IL

  • Tonight

    Tonight: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 48. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 6 to 10 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. South southwest wind 6 to 9 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49. Southwest wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 22 mph.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63. Northwest wind 6 to 9 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Light and variable wind.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Calm wind.
Thursday
Mostly sunny, with a high near 65. Calm wind becoming south around 6 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 48. Calm wind becoming south southwest around 6 mph after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 73. South southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 58. South southwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 75. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 49. Southwest wind 7 to 13 mph becoming northwest after midnight. Winds could gust as high as 22 mph.
Sunday
Sunny, with a high near 63. Northwest wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 40. Light and variable wind.
Monday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Light east northeast wind becoming east southeast 5 to 9 mph in the morning.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Southeast wind 6 to 8 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 62. South southeast wind 7 to 11 mph becoming west southwest in the afternoon.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 43. South wind 3 to 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 58. South wind 3 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Marion IL
 37.71°N 88.86°W
Last Update:
7:52 pm CST Nov 12, 2025
Forecast Valid:
8pm CST Nov 12, 2025-6pm CST Nov 19, 2025
 
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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