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Dezellem Lake, WA Weather Forecast
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Dezellem Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
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| Hazy | Hazy | Hazy | Partly Cloudy | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 56°FLo: 13°C | Hi: 80°FHi: 27°C | Hi: 86°FHi: 30°C Lo: 56°FLo: 13°C | Hi: 86°FHi: 30°C Lo: 56°FLo: 13°C | Hi: 86°FHi: 30°C Lo: 56°FLo: 13°C | Hi: 83°FHi: 28°C Lo: 60°FLo: 16°C | Hi: 83°FHi: 28°C Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 57°FLo: 14°C | Hi: 80°FHi: 27°C Lo: 57°FLo: 14°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 209 AM PDT Fri Aug 21 2026 
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Dezellem Lake Forecast Discussion
Issued: 327 AM PDT Fri Aug 21 2026
Key Messages
- A Heat Advisory has been issued for Friday afternoon and evening due to very warm temperatures and widespread Major HeatRisk.
- Saturday system brings increased chances for showers, thunderstorms, and gusty winds. This will lead to critical fire weather conditions across the Inland Northwest.
- Patchy blowing dust is possible Saturday in the Western Columbia Basin.
Discussion
... Friday: The ridge axis that was over the Inland NW on Thursday will begin to shift eastward into the Idaho Panh...