Powell Reservoir, OR Weather Forecast
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Powell Reservoir Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Partly Cloudy | Mostly Cloudy | Partly Cloudy | Chance of Showers | Rain Showers | Rain Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 83°FHi: 28°C | Lo: 55°FLo: 13°C | Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C | Hi: 65°FHi: 18°C Lo: 46°FLo: 8°C | Hi: 65°FHi: 18°C Lo: 46°FLo: 8°C | Hi: 70°FHi: 21°C | Hi: 70°FHi: 21°C Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C Lo: 50°FLo: 10°C |
| POP: 20% | POP: 70% | POP: 70% | POP: 50% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 401 AM PDT Mon Aug 31 2026 

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Issued: 404 AM PDT Mon Aug 31 2026
Key Messages
- Drying and warming trend will continue through early Tuesday as upper level high pressure moves over the region
- A series of upper level low pressure systems will bring periods of rain, breezy westerly winds, and isolated thunderstorm chances Tuesday into Friday
Discussion
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Short term upper ridging will influence the weather across the region Today leading to a day of warmer temperatures and low relative humidity area-wide. Widespread 80s are expected highs This Afternoon with cooler ...
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