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Onaway Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| Chance of Showers | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C Lo: 50°FLo: 10°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 330 AM PDT Fri Sep 18 2026 
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Issued: 250 AM PDT Fri Sep 18 2026
Key Messages
- Isolated showers over southeast Washington and the Central Panhandle Mountains Friday.
- Warm temperatures through Tuesday with afternoon highs in the mid 70s to low 80s.
Discussion
... Friday through Tuesday: A closed low over SE Oregon will slowly move east today, tracking into southern Idaho. Southeast flow will continue to draw mid level moisture into SE Washington into the Central Panhandle Mountains. This will keep a chance for showers going for the Blue Mountains, Palouse, Camas P...