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.

Partly Cloudy

82°F

28°C

Humidity 40%
Wind Speed N 8 mph
Barometer 30.02 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 19 Jun 12:45 pm CDT
Extended Forecast for

3 Miles NW Tunnel Hill IL

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 83. Light north wind.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Light southwest wind.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 10 percent chance of showers after 5am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Light south southeast wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 70. South southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    Low: 70 °F

    Showers

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 81. West southwest wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 81 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. North wind 5 to 8 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Light north northeast wind.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 83. Light north wind.
Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 85. Light southwest wind.
Saturday Night
A 10 percent chance of showers after 5am. Partly cloudy, with a low around 67. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Light south southeast wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 70. South southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Monday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 81. West southwest wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 63. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 80. Light north northeast wind.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind becoming west northwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 63. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming west around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Tunnel Hill IL
 37.58°N 88.9°W
Last Update:
12:41 pm CDT Jun 19, 2026
Forecast Valid:
1pm CDT Jun 19, 2026-6pm CDT Jun 25, 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