National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Light Rain

54°F

12°C

Humidity 94%
Wind Speed N 3 mph
Barometer 30.05 in
Dewpoint 52°F (11°C)
Visibility 3.00 mi
Last update 20 Nov 3:45 pm CST
Extended Forecast for

Tunnel Hill IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers. Areas of fog after 5pm. Otherwise, cloudy, with a high near 57. Light east wind.

    High: 57 °F

    Chance
    Showers and
    Areas Fog

  • Tonight

    Tonight: Showers likely, then showers and possibly a thunderstorm after 3am. Areas of fog. Low around 55. Calm wind. Chance of precipitation is 90%.

    Low: 55 °F

    Chance
    Showers and
    Areas Fog
    then Showers
    and Areas Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 66. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 100%.

    High: 66 °F

    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 48. Light and variable wind becoming north northwest around 6 mph in the evening. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 57. North wind 3 to 7 mph.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after noon. Mostly cloudy, with a high near 59. Calm wind becoming south southeast 5 to 7 mph in the morning.

    High: 59 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 50 percent chance of showers. Areas of fog after 5pm. Otherwise, cloudy, with a high near 57. Light east wind.
Tonight
Showers likely, then showers and possibly a thunderstorm after 3am. Areas of fog. Low around 55. Calm wind. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm. High near 66. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 100%.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 48. Light and variable wind becoming north northwest around 6 mph in the evening. Chance of precipitation is 70%.
Saturday
Mostly sunny, with a high near 57. North wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 39. Calm wind.
Sunday
Sunny, with a high near 61. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 42. Calm wind.
Monday
Showers likely, mainly after noon. Mostly cloudy, with a high near 59. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 52. South southwest wind around 7 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 63. South southwest wind 5 to 8 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 40. Northwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 50. Northwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tunnel Hill IL
 37.55°N 88.87°W
Last Update:
3:16 pm CST Nov 20, 2025
Forecast Valid:
3pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
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Additional Resources

Radar & Satellite Image

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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