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Decorah Muni Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  | | |  | |  | | |  | |
| Mostly Clear | Mostly Sunny | Mostly Cloudy | Mostly Sunny | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Mostly Cloudy |
| Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Hi: 59°FHi: 15°C Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Hi: 59°FHi: 15°C Lo: 41°FLo: 5°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 636 PM CDT Thu Oct 22 2026 
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Issued: 635 PM CDT Thu Oct 22 2026
Key Messages
- Abnormal warmth continues into this weekend as temperatures 15-20 degrees above normal are expected.
- Low precipitation potential exists late Saturday into early Sunday (10-20%), increasing slightly Monday through Tuesday (30-40%).
- Temperatures trend cooler and towards normal through the beginning of next week.
Discussion
... Issued at 120 PM CDT Thu Oct 22 2026
Tonight - Saturday: Abnormal Warmth Continues; Low Precipitation Potential
Upper level ridging and anomalously high 500hPa heigh...