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Isaac Lake, WI Weather Forecast
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Isaac Lake Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | | |  |  |  |  |  |  | |  |
| Sunny | Mostly Clear | Sunny | Clear | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Chance of Showers | Showers | Showers | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Lo: 49°FLo: 9°C |
| POP: 40% | POP: 90% | POP: 50% | POP: 70% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 625 AM CDT Wed Sep 09 2026 
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Issued: 646 AM CDT Wed Sep 9 2026
Key Messages
- Strong west-northwest winds are expected today, with gusts of 25 to 35 mph forecast, strongest in the Minnesota Arrowhead.
- Additional precipitation chances arrive late this week into the weekend. There is a slight risk (level 2 out of 5) for strong to severe thunderstorms Friday afternoon and evening.
- A pattern change to noticeably cooler temperatures is favored this weekend into early next week.
Aviation
/12Z TAFS THROUGH 12Z THURSDAY/... Issued at 646 AM CDT Wed Sep 9 2026
Breezy wind...