Flat Rock School, WI Weather Forecast
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Flat Rock School Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C |
| POP: 40% | POP: 40% | POP: 40% | POP: 90% | POP: 90% | POP: 70% | POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 AM CDT Wed Sep 16 2026 

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Issued: 143 AM CDT Wed Sep 16 2026
Key Messages
- Shower and storm chances (30-50%) return tonight into Thursday morning with minimal impacts expected.
- There is increasing confidence in heavy rainfall on Friday into Saturday across the entire area with potential rainfall amounts of 1-3 inches with locally higher amounts possible. Flooding and river rises may occur where the heaviest rainfall amounts occur.
Discussion
... Issued at 139 AM CDT Wed Sep 16 2026
Rainfall Potential Overnight Into Thursday Morning:
Passing low level anticyclon...
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