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

70°F

21°C

Humidity 64%
Wind Speed S 12 mph
Barometer 29.96 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Nov 6:45 pm CST
Extended Forecast for

3 Miles SSE Tunnel Hill IL

  • Tonight

    Tonight: Increasing clouds, with a low around 59. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 73. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 73 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. Southwest wind around 7 mph becoming north after midnight.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. North wind 3 to 7 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming east southeast 5 to 7 mph in the morning.

    High: 60 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Southeast wind 6 to 8 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before noon. Partly sunny, with a high near 65. South wind 7 to 9 mph becoming north northwest in the afternoon.

    High: 65 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 43. Northeast wind 3 to 6 mph.

    Low: 43 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. South southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 73. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 48. Southwest wind around 7 mph becoming north after midnight.
Sunday
Sunny, with a high near 60. North wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 37. Calm wind.
Monday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 60. Calm wind becoming east southeast 5 to 7 mph in the morning.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. Southeast wind 6 to 8 mph. Chance of precipitation is 70%.
Tuesday
A chance of showers before noon. Partly sunny, with a high near 65. South wind 7 to 9 mph becoming north northwest in the afternoon.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 43. Northeast wind 3 to 6 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 60. Light and variable wind becoming east southeast around 6 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 47. South southeast wind 3 to 6 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 65. South southwest wind 7 to 9 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 47. South southeast wind around 7 mph.
Friday
A chance of showers. Partly sunny, with a high near 61. South southeast wind 7 to 9 mph becoming southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Tunnel Hill IL
 37.51°N 88.85°W
Last Update:
7:47 pm CST Nov 14, 2025
Forecast Valid:
8pm CST Nov 14, 2025-6pm CST Nov 21, 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