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Casco, WI Weather Forecast
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Casco Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  | |  | |  |  |  |  | |
| Clear | Sunny | Partly Cloudy | Partly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Showers | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Hi: 69°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C Lo: 55°FLo: 13°C |
| POP: 60% | POP: 80% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 953 PM CDT Thu Sep 10 2026 
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Issued: 1053 PM CDT Thu Sep 10 2026
Key Messages
- Chances for thunderstorms return on Friday night into Saturday morning. The severe weather threat is low.
- Potential for heavy rainfall and thunderstorms increases Monday into Tuesday as a stronger low pressure system tracks near the region, though forecast uncertainty remains high.
- Gusty south-southwest winds will generate high waves along Lake Michigan Friday afternoon through Saturday morning, causing hazardous conditions to small craft and dangerous swimming conditions at Lake Mic...