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Griffen Waterhole Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY |
 |  |  |  | | | | |  |  |  | |
| Mostly Clear | Sunny | Mostly Cloudy | Clouds | Mostly Cloudy | Clouds | Mostly Clear | Mostly Clear | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Cloudy |
| Lo: 54°FLo: 12°C | Hi: 92°FHi: 33°C | Lo: 58°FLo: 14°C | Hi: 91°FHi: 33°C | Lo: 60°FLo: 16°C | Hi: 87°FHi: 31°C | Hi: 83°FHi: 28°C Lo: 50°FLo: 10°C | Hi: 83°FHi: 28°C Lo: 50°FLo: 10°C | Hi: 86°FHi: 30°C Lo: 53°FLo: 12°C | Hi: 86°FHi: 30°C Lo: 53°FLo: 12°C | Hi: 86°FHi: 30°C Lo: 53°FLo: 12°C | Hi: 86°FHi: 30°C Lo: 53°FLo: 12°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 130 PM PDT Wed Aug 19 2026 
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Issued: 524 PM MDT Wed Aug 19 2026
Key Messages
- Heat Advisory Thursday afternoon through Friday in the Treasure Valley, western Magic Valley, and Upper Weiser River Valley.
- Increased chance of afternoon and evening showers and thunderstorms over higher terrain Friday through Sunday.
- Above normal temperatures next week with a chance of afternoon thunderstorms each day over the mountains of southwest Idaho.
Aviation
/00Z Thursday through Friday/... Issued 521 PM MDT WED AUG 19 2026 VFR under mostly clear ...