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Onimish Lake, WI Weather Forecast
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Onimish Lake Weather Forecast
| REST OF THE NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Clear | Clear | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Hi: 79°FHi: 26°C Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C Lo: 50°FLo: 10°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C |
| POP: 90% | POP: 70% | POP: 50% | POP: 20% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 122 AM CDT Fri Aug 21 2026 
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Onimish Lake Forecast Discussion
Issued: 143 AM CDT Fri Aug 21 2026
Key Messages
- Area of showers and embedded storms this morning. No severe weather is expected.
- Isolated to scattered storms (40-75% chance) are expected to redevelop over eastern WI between 3 and 9 PM today. Strong to severe storms are possible (level 2 of 5 risk).
- Showers and storms (40-60% chance) are expected over north- central to eastern WI on Saturday.
Discussion
... Issued at 142 AM CDT Fri Aug 21 2026
Today into Tonight...initial area of showers and isolated storms was struggling last evening...