Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

61°F

16°C

Humidity 52%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 28 Feb 5:45 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Mostly cloudy, then gradually becoming mostly clear, with a low around 35. South southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.

    Low: 35 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 50. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 50 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of rain showers before midnight, then rain likely, possibly mixed with snow showers.  Cloudy, with a low around 36. East northeast wind around 9 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: Showers likely, mainly before noon.  Cloudy, with a high near 48. East wind 7 to 9 mph.  Chance of precipitation is 60%.

    High: 48 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers.  Cloudy, with a low around 44. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 18 mph.

    Low: 44 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers.  Mostly cloudy, with a high near 70. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 70 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely.  Mostly cloudy, with a low around 58. South wind 7 to 10 mph.  Chance of precipitation is 60%.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 72. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 72 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 58. South southwest wind around 9 mph.

    Low: 58 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 35. South southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 18 mph.
Sunday
Increasing clouds, with a high near 50. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Sunday Night
A chance of rain showers before midnight, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 36. East northeast wind around 9 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 48. East wind 7 to 9 mph. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers. Cloudy, with a low around 44. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 18 mph.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 70. South southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 58. South wind 7 to 10 mph. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 72. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. South southwest wind around 9 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 72. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. South wind 7 to 9 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Friday Night
Showers likely. Mostly cloudy, with a low around 58. South southwest wind around 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 68. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
3:51 pm CST Feb 28, 2026
6pm CST Feb 28, 2026-6pm CST Mar 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

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