Weather WorldKnox Spring Reservoir, OR Weather Forecast
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Knox Spring Reservoir Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY |
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| Increasing Clouds | Chance of T-Storm | Blowing Dust | Blowing Dust | Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers | Partly Cloudy | Partly Cloudy | Sunny |
| Hi: 91°FHi: 33°C | Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C | Lo: 51°FLo: 11°C | Hi: 84°FHi: 29°C | Hi: 87°FHi: 31°C Lo: 52°FLo: 11°C | Hi: 87°FHi: 31°C Lo: 52°FLo: 11°C | Lo: 54°FLo: 12°C | Hi: 86°FHi: 30°C Lo: 52°FLo: 11°C | Hi: 86°FHi: 30°C Lo: 52°FLo: 11°C | Hi: 84°FHi: 29°C |
| POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 130 AM PDT Fri Aug 21 2026 
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Issued: 1227 AM MDT Fri Aug 21 2026
Key Messages
- Heat Advisory continued 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 over southwest Idaho Monday and Tuesday.
Aviation
/06Z Friday through Saturday/... Issued 1226 AM MDT FRI AUG 21 2026 VFR, with increasing mid-high clouds from the west. Patchy wildfire ...