Weather WorldUpper Lake Union High School, CA Weather Forecast
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Upper Lake Union High School Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  | | |  |  | | | | |
| Cloudy | Mostly Cloudy | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Lo: 63°FLo: 17°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 84°FHi: 29°C | Hi: 87°FHi: 31°C Lo: 58°FLo: 14°C | Hi: 87°FHi: 31°C Lo: 58°FLo: 14°C | Hi: 89°FHi: 32°C Lo: 62°FLo: 17°C | Hi: 89°FHi: 32°C Lo: 62°FLo: 17°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 136 PM PDT Thu Aug 20 2026 
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Upper Lake Union High School Forecast Discussion
Issued: 345 PM PDT Thu Aug 20 2026
Key Messages
- Thick smoke remains stuck around the Hoopa Valley with weak mixing keeping smoke stuck in terrain into the weekend.
- Very slight chance for isolated dry storms in the interior during the day Friday.
- High level clouds will help create near to slightly below normal temperatures Friday and into the weekend.
Discussion
...High pressure finally began to weaken today with the hottest interior valleys closer to 90 than 100 and deeper, though still persistent, mari...