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Jack Lake, MN Weather Forecast
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Jack Lake Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  |  |  | | | | | |  |
| Chance of Showers | Partly Sunny | Mostly Cloudy | Clearing | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Mostly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 49°FLo: 9°C | Hi: 60°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C | Hi: 61°FHi: 16°C Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 631 PM CDT Sat Sep 19 2026 
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Issued: 639 PM CDT Sat Sep 19 2026
Key Messages
- Dangerous swimming conditions expected for the beaches of the Twin Ports today through Monday.
- Frost is forecast beginning Sunday night and continuing through Wednesday night. Sub-freezing temperatures are forecast Monday night.
Discussion
... Issued at 144 PM CDT Sat Sep 19 2026
For the rest of the day, expect rain showers across inland northern Wisconsin. A cold front will drop southward from the north this evening and tonight, bringing a period of low cloud bases and potentially some...