Weather WorldHarris Lake, ID Weather Forecast
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Harris Lake Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  | | | | | | |  |  |  |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Partly Cloudy |
| Lo: 64°FLo: 18°C | Hi: 98°FHi: 37°C | Lo: 67°FLo: 19°C | Hi: 93°FHi: 34°C | Lo: 62°FLo: 17°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 88°FHi: 31°C | Lo: 58°FLo: 14°C | Hi: 90°FHi: 32°C Lo: 60°FLo: 16°C | Hi: 90°FHi: 32°C Lo: 60°FLo: 16°C | Hi: 90°FHi: 32°C Lo: 59°FLo: 15°C |
| POP: 20% | POP: 20% | POP: 30% | POP: 30% | POP: 40% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Thu Aug 20 2026 
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Harris Lake Forecast Discussion
Issued: 213 PM MDT Thu Aug 20 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
/18Z Thursday through Friday/... Issued 1130 AM MDT THU AUG 20 2026 VFR. Increasing clouds AOA 15 kft MSL....