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Frentress Lake, IL Weather Forecast
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Frentress Lake Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | |  |  |  |  | | | |  |  |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Showers | Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 80°FHi: 27°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C |
| POP: 90% | POP: 20% | POP: 40% | POP: 50% | POP: 60% | POP: 70% | POP: 70% | POP: 70% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 331 AM CDT Tue Aug 11 2026 
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