Reservoir Number Two, OR Weather Forecast
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Reservoir Number Two Weather Forecast
| OVERNIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
| Mostly Clear | Sunny | Mostly Clear | Mostly Cloudy | Chance of Showers | Chance of Showers | Partly Cloudy | Mostly Cloudy | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny |
| Lo: 55°FLo: 13°C | Hi: 91°FHi: 33°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C |
| POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1128 PM PDT Wed Aug 19 2026 

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Reservoir Number Two Forecast Discussion
Issued: 1005 PM PDT Wed Aug 19 2026
Discussion
...Wednesday afternoon through Tuesday...Visible satellite imagery early Wednesday afternoon shows mostly clear skies across NW OR and SW WA. However, the marine layer will once again inundate the coast this evening into tomorrow morning with marine stratus making a run down the Lower Columbia River. Dry and warm weather continues today and tomorrow as an upper- level ridge amplifies over the Rockies and Great Basin. Expect high temperatures near or slight...
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