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Trinity Lake Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Chance of T-Storm | Thunderstorms | Snow Showers | Rain and Snow | Rain and Snow | Rain and Snow | Rain and Snow | Rain and Snow | Partly Cloudy | Partly Cloudy | Rain and Snow | Rain and Snow |
| Lo: 39°FLo: 4°C | Hi: 43°FHi: 6°C | Lo: 34°FLo: 1°C | Hi: 43°FHi: 6°C | Hi: 43°FHi: 6°C Lo: 36°FLo: 2°C | Hi: 43°FHi: 6°C Lo: 36°FLo: 2°C | Lo: 30°FLo: -1°C | Hi: 40°FHi: 4°C | Hi: 41°FHi: 5°C Lo: 26°FLo: -3°C | Hi: 41°FHi: 5°C Lo: 26°FLo: -3°C | Lo: 29°FLo: -2°C | Hi: 35°FHi: 2°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1237 PM PST Thu Nov 12 2026 
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Issued: 315 PM PST Thu Nov 12 2026
Key Messages
- Moderate to heavy rain and gusty south winds across much of the area throughout Friday.
- Very large surf Saturday with breaking waves over 25 feet is possible. This will increase beach erosion and possibly bring some coastal flooding.
- Additional rain and wind possible over the weekend and into early next week.
Discussion
...A troughing pattern will move into the Pacific Northwest late this evening and will persist through early next week. Two cutoff low pressure systems are projected to...