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Lake Napowan, WI Weather Forecast
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Lake Napowan Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 | |  | |  |  |  | |  |  | |  |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Sunny | Thunderstorms | Partly Sunny | Mostly Clear | Chance of Showers | Partly Cloudy | Partly Cloudy |
| Hi: 69°FHi: 21°C | Hi: 85°FHi: 29°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C |
| POP: 20% | POP: 40% | POP: 30% | POP: 60% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 258 AM CDT Sun Aug 30 2026 
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Issued: 302 AM CDT Sun Aug 30 2026
Key Messages
- Isolated to scattered showers and storms throughout today and this evening. There is a low chance for additional showers and storms on Monday. If storms develop on Monday, they may become strong or severe, but details are uncertain at this time.
- Hazardous boating and swimming conditions on Lake Michigan through late this afternoon.
- Warmer, more humid conditions today and Monday. Heat indices may rise into the 90s Monday afternoon.
Discussion
... Issued at 302 AM CDT Sun Aug 30 2026
Prec...