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Wayne County Fairgrounds, IL Weather Forecast
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Wayne County Fairgrounds Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SUNDAY |
 |  | |  | | | | | | |
| Sunny | Mostly Clear | Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny |
| Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 217 PM CDT Mon Sep 14 2026 
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Issued: 1052 PM CDT Mon Sep 14 2026
Key Messages
- A dangerous late season heat wave with high temperatures near or at record levels will begin today and continue through most of the week.
- A Heat Advisory will be in effect this afternoon through Wednesday evening for the entire area. The Heat Advisory may need to be extended to Thursday or Friday as well.
- Cooler and less humid conditions will arrive Sunday and Monday, along with a 20 to 40% chance of showers and thunderstorms on both days.
Discussion
... Issued at 1052 PM CDT Mon Sep 1...