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Brillion, WI Weather Forecast
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Brillion Weather Forecast
| REST OF THE NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| Partly Cloudy | Partly Cloudy | Clear | Partly Cloudy | Clear | Chance of Showers | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Partly Cloudy |
| Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C |
| POP: 40% | POP: 100% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 122 AM CDT Sat Sep 12 2026 
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Issued: 1231 AM CDT Sat Sep 12 2026
Key Messages
- Scattered storms early this morning, mainly in north-central WI. Severe weather threat is very low, but brief gusty winds are possible.
- A round or two of heavy rain and storms is possible Monday into Tuesday. The severe weather threat is low.
- Gusty south-southwest winds will generate high waves along Lake Michigan through this morning, causing hazardous conditions to small craft and dangerous swimming conditions at Lake Michigan beaches. Another period of breezy winds and high waves ...