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Celilo Weather Forecast
| REST OF TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | FRIDAY |
 |  | | | | | |  | | | |
| Clear | Sunny | Mostly Clear | Sunny | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 83°FHi: 28°C | Lo: 56°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 56°FLo: 13°C | Hi: 83°FHi: 28°C Lo: 56°FLo: 13°C | Hi: 83°FHi: 28°C Lo: 56°FLo: 13°C | Hi: 76°FHi: 24°C Lo: 56°FLo: 13°C | Hi: 76°FHi: 24°C Lo: 56°FLo: 13°C | Hi: 76°FHi: 24°C Lo: 56°FLo: 13°C | Hi: 70°FHi: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 PM PDT Fri Sep 18 2026 
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Issued: 1039 PM PDT Fri Sep 18 2026
Key Messages
- Warmer and drier trend through the weekend.
- Cooler through workweek, showers possible late in the week.
Discussion
... Current radar and visible satellite imagery shows light to moderate returns and building clouds over Wallowa, southern Union, and eastern Grant counties. This is in response to a slowly departing upper level low pressure system moving into southern Idaho this evening as an upper level ridge builds in its wake. The incoming high pressure is keeping skies clear across th...