Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
19°F
-7°C
| Humidity | 49% |
| Wind Speed | N 12 mph |
| Barometer | 30.39 in |
| Dewpoint | 3°F (-16°C) |
| Visibility | 10.00 mi |
| Wind Chill | 6°F (-14°C) |
| Last update | 30 Jan 10:47 am CST |
Extended Forecast for
Herrin IL
Cold Weather Advisory January 31, 12:00am until January 31, 12:00pm
Today
High: 19 °F
Chance
FlurriesTonight
Low: 7 °F
Chance
FlurriesSaturday
High: 19 °F
Partly Sunny
Saturday Night
Low: 1 °F
Mostly Clear
Sunday
High: 29 °F
Mostly Sunny
Sunday Night
Low: 18 °F
Mostly Cloudy
Monday
High: 37 °F
Partly Sunny
Monday Night
Low: 23 °F
Mostly Cloudy
Tuesday
High: 41 °F
Mostly Cloudy
then Chance
Rain
Detailed Forecast
Today
A chance of flurries after noon. Mostly sunny, with a high near 19. North wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
A chance of flurries before midnight. Mostly cloudy, with a low around 7. Wind chill values as low as -4. North northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 19. Wind chill values as low as -6. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 1. Northwest wind 5 to 8 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 29. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 18. South southwest wind 3 to 6 mph.
Monday
Partly sunny, with a high near 37. West wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 23. Light and variable wind.
Tuesday
A chance of rain after noon. Mostly cloudy, with a high near 41. South southwest wind 5 to 7 mph.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 29. South wind around 6 mph becoming north northwest after midnight.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 38. Northwest wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 22. North northwest wind around 6 mph.
Thursday
Partly sunny, with a high near 35. Northwest wind 5 to 7 mph becoming west southwest in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Herrin IL
37.8°N 89.03°W
37.8°N 89.03°W
10:31 am CST Jan 30, 2026
11am CST Jan 30, 2026-6pm CST Feb 5, 2026
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