Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Mostly Cloudy
79°F
26°C
| Humidity | 84% |
| Wind Speed | N 9 mph |
| Barometer | 30.02 in |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 14 Oct 3:45 pm CDT |
Extended Forecast for
Herrin IL
This Afternoon
High: 82 °F
Chance
T-stormsTonight
Low: 67 °F
Chance
T-stormsThursday
High: 88 °F
Chance
Showers then
Slight Chance
T-stormsThursday Night
Low: 52 °F
Slight Chance
T-storms then
Chance
ShowersFriday
High: 59 °F
Partly Sunny
and BreezyFriday Night
Low: 42 °F
Mostly Cloudy
Saturday
High: 63 °F
Sunny
Saturday Night
Low: 38 °F
Clear
Sunday
High: 68 °F
Sunny
Detailed Forecast
This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Northwest wind around 6 mph.
Tonight
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Cloudy through mid morning, then gradual clearing, with a high near 88. Light and variable wind becoming south southwest 8 to 13 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Thursday Night
A slight chance of showers and thunderstorms before 3am, then a chance of showers between 3am and 4am. Increasing clouds, with a low around 52. Southwest wind 7 to 17 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 59. Breezy, with a northwest wind around 21 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 42. North northwest wind 10 to 16 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 63. North northeast wind 8 to 11 mph.
Saturday Night
Clear, with a low around 38. Calm wind.
Sunday
Sunny, with a high near 68. Calm wind becoming south southeast around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 42. Calm wind.
Monday
Mostly sunny, with a high near 73. Calm wind becoming south around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 47. Calm wind.
Tuesday
Mostly sunny, with a high near 76. Calm wind becoming south southeast around 5 mph 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
2:56 pm CDT Oct 14, 2026
4pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
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