Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
55°F
13°C
| Humidity | 88% |
| Wind Speed | Vrbl 1 mph |
| Barometer | 30.20 in |
| Dewpoint | 52°F (11°C) |
| Visibility | 10.00 mi |
| Last update | 4 Oct 11:55 pm CDT |
Extended Forecast for
Herrin IL
Overnight
Low: 53 °F
Clear
Monday
High: 78 °F
Sunny
Monday Night
Low: 49 °F
Clear
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 51 °F
Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 56 °F
Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear
Detailed Forecast
Overnight
Clear, with a low around 53. North wind 3 to 5 mph.
Monday
Sunny, with a high near 78. Northeast wind 5 to 8 mph.
Monday Night
Clear, with a low around 49. Light east wind.
Tuesday
Sunny, with a high near 79. Calm wind becoming east southeast around 5 mph.
Tuesday Night
Clear, with a low around 51. Calm wind.
Wednesday
Sunny, with a high near 85. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Wednesday Night
Clear, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 83. Calm wind becoming northeast 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 55. Light east wind.
Friday
Sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 55. Light east southeast wind.
Saturday
Sunny, with a high near 84. Southeast wind 3 to 8 mph.
Saturday Night
Mostly clear, with a low around 58. East southeast wind 3 to 5 mph.
Sunday
A slight chance of showers. Mostly sunny, with a high near 83. Light east southeast wind becoming southeast 5 to 9 mph in the morning.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Herrin IL
37.8°N 89.03°W
37.8°N 89.03°W
12:00 am CDT Oct 5, 2026
12am CDT Oct 5, 2026-6pm CDT Oct 11, 2026
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