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.

A Few Clouds

73°F

23°C

Humidity 69%
Wind Speed N 7 mph
Barometer 30.05 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Jun 8:45 am 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: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 84. South wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 70. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 70 °F

    T-storms then
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. West southwest wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. North wind 5 to 7 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Calm wind becoming north around 5 mph.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Mostly sunny, with a high near 83. Light north wind.
Tonight
Partly cloudy, with a low around 64. Calm wind.
Saturday
Sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 67. Calm wind.
Sunday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 84. South wind 5 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 70. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. West southwest wind 9 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 63. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 80. Calm wind becoming north around 5 mph.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind becoming northwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 64. Calm wind.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Calm wind becoming south around 5 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:
8:06 am CDT Jun 19, 2026
Forecast Valid:
9am CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
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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