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

75°F

24°C

Humidity 36%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 6 Oct 5:47 pm CDT
Extended Forecast for

3 Miles SW Tunnel Hill IL

  • Tonight

    Tonight: Clear, with a low around 52. Calm wind.

    Low: 52 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. Light north northeast wind.

    Low: 55 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 81. East southeast wind 3 to 6 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 1pm. Mostly sunny, with a high near 83. South southeast wind 5 to 8 mph.

    High: 83 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 59. East southeast wind 5 to 7 mph.

    Low: 59 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 52. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 58. Light and variable wind.
Thursday
Sunny, with a high near 82. Calm wind becoming north around 5 mph in the morning.
Thursday Night
Clear, with a low around 55. Light north northeast wind.
Friday
Sunny, with a high near 81. East southeast wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 58. Calm wind becoming south southeast around 5 mph after midnight.
Saturday
A slight chance of showers after 1pm. Mostly sunny, with a high near 83. South southeast wind 5 to 8 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 59. East southeast wind 5 to 7 mph.
Sunday
A chance of showers. Partly sunny, with a high near 73. East wind 7 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 57. Calm wind.
Columbus Day
Mostly sunny, with a high near 78. Calm wind becoming north northwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 58. Calm wind becoming south around 5 mph after midnight.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 79. South southwest wind 5 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Tunnel Hill IL
 37.53°N 88.93°W
Last Update:
5:51 pm CDT Oct 6, 2026
Forecast Valid:
6pm CDT Oct 6, 2026-6pm CDT Oct 13, 2026
 
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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