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

79°F

26°C

Humidity 30%
Wind Speed SE 9 mph
Barometer 30.03 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Oct 2:47 pm CDT
Extended Forecast for

3 Miles SSE Tunnel Hill IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 75. Light southeast wind.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the morning.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. Light south southwest wind.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the morning.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 53. Light north northeast wind.

    Low: 53 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82. East southeast wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Light east wind.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 1pm. Mostly sunny, with a high near 83. South southeast wind 3 to 8 mph.

    High: 83 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 75. Light southeast wind.
Tonight
Clear, with a low around 51. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind becoming southwest around 6 mph in the morning.
Wednesday Night
Mostly clear, with a low around 58. Light south southwest wind.
Thursday
Sunny, with a high near 83. Calm wind becoming north northeast around 6 mph in the morning.
Thursday Night
Clear, with a low around 53. Light north northeast wind.
Friday
Sunny, with a high near 82. East southeast wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 58. Light east wind.
Saturday
A slight chance of showers after 1pm. Mostly sunny, with a high near 83. South southeast wind 3 to 8 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 58. East southeast wind 5 to 7 mph.
Sunday
A chance of showers. Partly sunny, with a high near 73. East wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 57. Calm wind.
Columbus Day
Mostly sunny, with a high near 79. Calm wind becoming north northwest around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Tunnel Hill IL
 37.53°N 88.85°W
Last Update:
1:16 pm CDT Oct 6, 2026
Forecast Valid:
2pm CDT Oct 6, 2026-6pm CDT Oct 12, 2026
 
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