Split Butte Lake, ID Weather Forecast
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Split Butte Lake Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C | Lo: 56°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 83°FHi: 28°C | Lo: 53°FLo: 12°C | Hi: 81°FHi: 27°C | Lo: 52°FLo: 11°C | Hi: 80°FHi: 27°C | Hi: 80°FHi: 27°C Lo: 52°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 AM MDT Sat Oct 03 2026 

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Issued: 553 AM MDT Sat Oct 3 2026
Key Messages
- Prolonged Quiet Weather Period: High pressure and dry air will keep eastern Idaho completely dry with minimal cloud cover through the upcoming weekend and into early October.
- Unseasonable Late-Week Warmth: An amplifying Great Basin ridge will boost lower-elevation temperatures into the upper 70s and lower 80s through the weekend.
- No Fall-Like Weather in Sight: High confidence exists for above-normal temperatures and suppressed precipitation extending through the first full week of Oc...
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