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Hermon Weather Forecast
| REST OF TODAY | TONIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  | |  |  | | | |  | |
| Sunny | Mostly Cloudy | Sunny | Clear | Sunny | Showers Likely | Showers | Chance of Showers | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy |
| Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C |
| POP: 70% | POP: 70% | POP: 50% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 737 AM CDT Sun Oct 11 2026 
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Issued: 613 AM CDT Sun Oct 11 2026
Key Messages
- Near-record warmth can be expected today and Monday, with afternoon high temperatures in the 80s today and upper 80s to lower 90s Monday. Tuesday looks equally warm south of I-72.
- An extended period of rain chances is on track Tuesday night through Thursday. There is a Marginal Risk for severe thunderstorms in west-central IL Tuesday evening, otherwise severe weather potential appears low at this point.
- Colder air will arrive next weekend, although the amount of cooling remains uncer...