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Keith Reservoir Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Sunny | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Hi: 74°FHi: 23°C | Lo: 49°FLo: 9°C | Hi: 81°FHi: 27°C | Lo: 53°FLo: 12°C | Hi: 80°FHi: 27°C | Lo: 53°FLo: 12°C | Hi: 76°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 76°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 80°FHi: 27°C Lo: 49°FLo: 9°C | Hi: 80°FHi: 27°C Lo: 49°FLo: 9°C | Hi: 80°FHi: 27°C Lo: 53°FLo: 12°C | Hi: 80°FHi: 27°C Lo: 53°FLo: 12°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 AM MDT Sun Aug 30 2026 
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Issued: 534 AM MDT Sun Aug 30 2026
Key Messages
- Pleasant Post-Frontal Sunday: Early morning showers are pushing east into Wyoming, clearing the way for widespread midday sunshine, cooler high temperatures in the upper 60s to mid-70s, and breezy afternoon conditions (gusts up to 30 mph across the Arco Desert and upper Snake Plain).
- Chilly Sunday Night: Light winds, clear skies, and a drier air mass will allow overnight lows to drop into the 40s in lower elevation valleys and 30s across high country basins.
- Unsettled Workweek Waves:...