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.

Partly Cloudy

55°F

13°C

Humidity 67%
Wind Speed S 7 mph
Barometer 30.11 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 14 Nov 6:45 am CST
Extended Forecast for

5 Miles SW Marion IL

  • Today

    Today: Sunny, with a high near 75. South southwest wind 7 to 10 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. Southwest wind 6 to 8 mph becoming north after midnight.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. North wind 3 to 6 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 62. Calm wind becoming east southeast 5 to 7 mph in the morning.

    High: 62 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 48. East wind 6 to 8 mph.

    Low: 48 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly before noon. Partly sunny, with a high near 63. East wind 7 to 9 mph becoming north northwest in the afternoon.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 75. South southwest wind 7 to 10 mph.
Tonight
Mostly clear, with a low around 60. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 75. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 48. Southwest wind 6 to 8 mph becoming north after midnight.
Sunday
Sunny, with a high near 62. North wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 62. Calm wind becoming east southeast 5 to 7 mph in the morning.
Monday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 48. East wind 6 to 8 mph.
Tuesday
A chance of showers, mainly before noon. Partly sunny, with a high near 63. East wind 7 to 9 mph becoming north northwest in the afternoon.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 41. Northeast wind 3 to 6 mph.
Wednesday
A chance of showers. Mostly cloudy, with a high near 56. East northeast wind 5 to 7 mph.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 45. East wind 3 to 7 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 62. East wind 7 to 9 mph becoming south in the afternoon.
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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:
3:11 am CST Nov 14, 2025
Forecast Valid:
7am CST Nov 14, 2025-6pm CST Nov 20, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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