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Lake Wahelo, IL Weather Forecast
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Lake Wahelo Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  |  |  | | | | | |
| Sunny | Mostly Clear | Partly Sunny | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1238 PM CDT Mon Aug 17 2026 
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Lake Wahelo Forecast Discussion
Issued: 145 PM CDT Mon Aug 17 2026
Key Messages
- Cooler and less active weather is on deck for this week, but it won`t be completely dry. There is a 50-70% chance for showers and thunderstorms tomorrow night through Wednesday night as a front pushes south across the area and stalls near southern Illinois.
- Temperatures for the next 7 days will be in the upper 70s to lower 80s for highs and 60s for lows. The CPC 6-10 and 8-14 day outlooks show a 40-60% chance of above normal temperatures returning throug...