Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

72°F

22°C

Humidity 22%
Wind Speed S 18 G 25 mph
Barometer 30.13 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 29 Mar 4:47 pm CDT
Extended Forecast for

2 Miles ENE Herrin 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: 71 °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 23 mph.

    Low: 58 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 81. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 81 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South wind around 15 mph, with gusts as high as 24 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 31 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly after 1am.  Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm.  High near 78. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 61. South wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. South wind around 14 mph, with gusts as high as 25 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 58. South wind 10 to 13 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 81. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 65. South wind around 15 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 15 to 21 mph, with gusts as high as 31 mph.
Tuesday Night
A 50 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 64. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 78. South southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 74. South southwest wind 13 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 55. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 75. South wind 9 to 13 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 60. South southeast wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. South wind 11 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 23 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 64. West northwest wind around 15 mph, with gusts as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
3:52 pm CDT Mar 29, 2026
5pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
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Additional Resources

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