Seneca, OR Weather Forecast
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Seneca Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY |
| Snow Showers | Clearing | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Snow Showers | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 26°FLo: -3°C | Hi: 46°FHi: 8°C | Lo: 23°FLo: -5°C | Hi: 55°FHi: 13°C | Lo: 26°FLo: -3°C | Hi: 56°FHi: 13°C | Lo: 30°FLo: -1°C | Hi: 53°FHi: 12°C | Lo: 26°FLo: -3°C | Hi: 50°FHi: 10°C Lo: 26°FLo: -3°C | Hi: 50°FHi: 10°C Lo: 26°FLo: -3°C | Hi: 50°FHi: 10°C Lo: 26°FLo: -3°C |
| POP: 70% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 302 PM PDT Thu Oct 22 2026 

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Issued: 325 PM PDT Thu Oct 22 2026
Key Messages
- Rain and slight chance (10-15%) of thunderstorms today, with the best chances of wetting rain (0.10" or greater) over the Blue Mountains (90-99% chance) through early Friday.
- Breezy to windy westerly to northwesterly winds late this afternoon into Friday, strongest through the Cascade gaps where Wind Advisories in effect.
- Widespread near- to sub-freezing low temperatures in the Columbia Basin and surrounding lowlands Saturday morning (50-95% chance). Freeze Watches issued.
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