Weather WorldUpper Post Lake, WI Weather Forecast
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Upper Post Lake Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | | | | |  | | |
| Light Rain | Clearing | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 71°FHi: 22°C Lo: 41°FLo: 5°C |
| POP: 80% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1108 PM CDT Sat Oct 03 2026 
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Issued: 1053 PM CDT Sat Oct 3 2026
Key Messages
- Chance of showers (40 to 90%) at times through late tonight. Greatest chances of over 0.25 inch of rain far north-central WI. Otherwise, mainly dry through next week.
- Areas of frost across northern Wisconsin both Sunday and Monday nights. Greatest chance for a widespread frost/freeze event will be Sunday night.
Discussion
... Issued at 101 PM CDT Sat Oct 3 2026
Rain chances through Sunday...Weak warm air advection has been main trigger for isolated light showers seen so far today over W...