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St. Joseph Lake, WI Weather Forecast
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St. Joseph Lake Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  |  | |  | | | | |  |  | |
| Widespread Fog | Chance of T-Storm | Chance of T-Storm | Widespread Fog | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C |
| POP: 50% | POP: 50% | POP: 30% | POP: 70% | POP: 50% | POP: 40% | POP: 30% | POP: 40% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 702 AM CDT Tue Sep 01 2026 
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Issued: 630 AM CDT Tue Sep 1 2026
Key Messages
- Warm, humid conditions continue today with highs in the 80s to lower 90s. Heat indices climbing into the lower to middle 90s across central into northeast WI.
- Marginal Risk (Level 1 of 5) of severe storms late tonight into Wednesday south of a Merrill to Wausaukee line. The main risk would be strong or damaging winds and hail up to one inch in diameter.
- Above normal temperatures and the periodic chances of thunderstorms will continue Thursday into weekend.
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