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Tree Lake, WI Weather Forecast
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Tree Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  |  |  | | | | | |
| Chance of Showers | Partly Cloudy | Clear | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Sunny | Chance of Showers | Mostly Cloudy |
| Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 822 PM CDT Mon Sep 21 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 639 PM CDT Mon Sep 21 2026
Key Messages
- Hazardous boating and swimming conditions are expected on the Bay and Lake through Tuesday afternoon.
- Patchy areas of frost are possible early Tuesday morning across north-central WI. Additional periods of frost are possible through the week.
- A quieter and drier weather pattern will settle into the region for the next week.
Discussion
... Issued at 231 PM CDT Mon Sep 21 2026
Minimally impactful weather is forecast through this weekend. For the rest of today and tonight an upper-level lo...