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Avery Lake, IL Weather Forecast
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Avery Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | | | | | | |  | |  | |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Mostly Sunny |
| Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Wed Sep 16 2026 
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Issued: 1211 PM CDT Wed Sep 16 2026
Key Messages
- The dangerous record breaking late season heat wave will continue over the next several days. A Heat Advisory is now in effect through Sunday evening for the entire region.
- There is a 20-30% chance of an isolated shower or thunderstorm this afternoon, mainly near and north of I-64. Lower chances linger Thursday into Friday.
- Relief from the heat and humidity arrives early next week with high temperatures trending cooler into the 80s. Daily isolated showers and thunderstorms will also ...