Weather WorldZeigler Reservoir, IL Weather Forecast
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Zeigler Reservoir Weather Forecast
| OVERNIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
 |  | |  |  | | | | | |
| Mostly Clear | Sunny | Mostly Clear | Partly Sunny | Clearing | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Fri Aug 28 2026 
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Issued: 1238 AM CDT Fri Aug 28 2026
Key Messages
- Confidence is high that a late season heatwave will impact our region next week, with highs reaching the mid to upper 90s. Overnight lows also look quite balmy, remaining in the mid 70s by mid to late week which may threaten some record warm lows. The prolonged duration of the heat may warrant heat headlines.
- Dry weather is expected over the next 7 days, and limited rainfall prospects may continue through Labor Day weekend.
Discussion
... Issued at 1237 AM CDT Fri Aug 28 2026
Surface hi...