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.

Partly Cloudy

70°F

21°C

Humidity 21%
Wind Speed S 20 mph
Barometer 30.17 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 29 Mar 2:45 pm CDT
Extended Forecast for

4 Miles NW Tunnel Hill IL

Red Flag Warning until March 29, 07:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until March 29, 07:00pm

    NOW until 7:00pm Sun

    Red Flag Warning

  • This Afternoon

    High: 68 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 58. South wind 10 to 13 mph, with gusts as high as 24 mph.

    Low: 58 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 78. South southwest wind 13 to 17 mph, with gusts as high as 30 mph.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South southwest wind around 14 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 33 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 77. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 77 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southeast wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 68. South southwest wind around 14 mph, with gusts as high as 28 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 58. South wind 10 to 13 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 78. South southwest wind 13 to 17 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 65. South southwest wind around 14 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 82. South southwest wind 14 to 18 mph, with gusts as high as 33 mph.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 77. South southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southeast wind 7 to 10 mph, with gusts as high as 21 mph.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 55. South southwest wind 10 to 13 mph, with gusts as high as 21 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 74. South wind 9 to 11 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 61. Southeast wind around 9 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. South wind 10 to 15 mph, with gusts as high as 26 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Tunnel Hill IL
 37.6°N 88.93°W
Last Update:
1:26 pm CDT Mar 29, 2026
Forecast Valid:
3pm CDT Mar 29, 2026-6pm CDT Apr 4, 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