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

52°F

11°C

Humidity 82%
Wind Speed Vrbl 7 mph
Barometer 30.32 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 16 Oct 7:55 pm CDT
Extended Forecast for

4 Miles NW Tunnel Hill IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. North wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 58. North northeast wind 8 to 10 mph.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming east southeast around 5 mph in the morning.

    High: 64 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 69. Light east wind.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 43. North wind 7 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 58. North northeast wind 8 to 10 mph.
Saturday Night
Clear, with a low around 36. Calm wind.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 64. Calm wind becoming east southeast around 5 mph in the morning.
Sunday Night
Clear, with a low around 40. Calm wind.
Monday
Sunny, with a high near 69. Light east wind.
Monday Night
Mostly clear, with a low around 42. Calm wind.
Tuesday
Sunny, with a high near 72. Calm wind becoming east northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 45. Calm wind.
Wednesday
Sunny, with a high near 74. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 47. Calm wind.
Thursday
Sunny, with a high near 77. Light northeast wind.
Thursday Night
Mostly clear, with a low around 50. Calm wind.
Friday
Sunny, with a high near 78. Calm wind becoming east northeast around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Tunnel Hill IL
 37.6°N 88.93°W
Last Update:
7:46 pm CDT Oct 16, 2026
Forecast Valid:
8pm CDT Oct 16, 2026-6pm CDT Oct 23, 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