Turtlehead Lake, IL Weather Forecast
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Turtlehead Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Isolated Showers | Clear | Partly Cloudy | Chance of Showers | Showers | Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Showers | Showers Likely | Chance of Showers |
| Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C |
| POP: 20% | POP: 50% | POP: 70% | POP: 20% | POP: 20% | POP: 40% | POP: 60% | POP: 60% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 PM CDT Thu Oct 29 2026 

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Issued: 1214 PM CDT Thu Oct 29 2026
Key Messages
- A cold front will move across the area today accompanied by isolated to scattered showers (20-30% chance at any given spot). A lightning strike cannot be ruled out (~10% chance).
- Periods of showers and a few storms are expected Friday night through early Saturday afternoon (>60% chance areawide). Coverage of showers may taper in time for outdoor Halloween activities.
- Generally mild conditions will continue into the first week of November, through a changing weather pattern will resul...
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