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City of Garnavillo, IAGarnavillo, IA Weather Forecast
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Garnavillo Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | |  |  |  |  | | | | | |
| Chance of Showers | Chance of T-Storm | Showers | Partly Cloudy | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 71°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C Lo: 45°FLo: 7°C |
| POP: 50% | POP: 100% | POP: 90% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1212 PM CDT Wed Sep 30 2026 
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Issued: 1225 PM CDT Wed Sep 30 2026
Key Messages
- Heavy rain tonight and Thursday morning in Fayette and Clayton counties in northeast Iowa, and Grant County in southwest Wisconsin. The far southern portions of these counties may see 2 to 4 inches with localized higher totals.
- Central and north-central Wisconsin may see patchy to areas of frost on Friday night and areas to widespread frost on Sunday and Monday nights.
Discussion
... Issued at 1205 PM CDT Wed Sep 30 2026
Tonight and Thursday
The remnants from Hurricane Polo will move nor...