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.

Mostly Cloudy

82°F

28°C

Humidity 74%
Wind Speed S 14 mph
Barometer 29.75 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 21 Jun 5:45 pm CDT
Extended Forecast for

2 Miles SSW Tunnel Hill IL

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Low around 70. South southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 70 °F

    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 79. North northwest wind 7 to 9 mph.

    High: 79 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Northeast wind 3 to 5 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.

    High: 86 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 3am, then a chance of showers and thunderstorms after 3am. Low around 70. South southwest wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Monday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 79. North northwest wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 82. Northeast wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Light and variable wind.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Calm wind.
Friday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Calm wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 5 to 9 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 91. South southwest wind 9 to 17 mph, with gusts as high as 29 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Tunnel Hill IL
 37.53°N 88.87°W
Last Update:
5:46 pm CDT Jun 21, 2026
Forecast Valid:
6pm CDT Jun 21, 2026-6pm CDT Jun 28, 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