Shellrock Lake, WA Weather Forecast
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Shellrock Lake Weather Forecast
| REST OF TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Mostly Sunny | Clearing | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of Showers | Rain Showers | Snow Showers | Mostly Sunny |
| Hi: 66°FHi: 19°C | Lo: 43°FLo: 6°C | Hi: 66°FHi: 19°C | Lo: 47°FLo: 8°C | Hi: 70°FHi: 21°C | Hi: 60°FHi: 16°C | Lo: 36°FLo: 2°C | Hi: 46°FHi: 8°C | Lo: 35°FLo: 2°C | Hi: 46°FHi: 8°C | ||
| POP: 50% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 AM PDT Mon Oct 05 2026 

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Issued: 1050 AM PDT Mon Oct 5 2026
Key Messages
- Upper level high pressure over the region will continue to bring dry conditions and above normal temperatures through Thursday
- Locally breezy winds through the Cascade Gaps Monday afternoon
- Growing potential for mountain showers Friday into next weekend
Discussion
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A broad flat upper ridge was positioned across the western US with a tighter upper level height gradient and zonal flow from northern WA into the western Canada. This is a warm pattern for the Interior NW and Today is the ...
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