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Alta Reservoir Number 1, CO Weather Forecast
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Alta Reservoir Number 1 Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | | | | |  | | | |  | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of T-Storm |
| Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 75°FHi: 24°C | Lo: 41°FLo: 5°C | Hi: 75°FHi: 24°C |
| POP: 70% | POP: 60% | POP: 50% | POP: 60% | POP: 20% | POP: 40% | POP: 20% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 351 PM MDT Sat Aug 29 2026 
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Issued: 1247 PM MDT Sat Aug 29 2026
Key Messages
- Strong to Severe thunderstorms remain a threat this afternoon for northeast UT and northwest CO, including small hail and strong winds.
- Flash flooding remains a threat today through Monday as organized and training thunderstorms produce saturated soil conditions and excessive runoff.
- Cooler Temperatures arrive across the region this week.
- A downturn in moisture develops Tuesday, but concern for additional rainfall associated with extra-tropical moisture returns Wednesday.
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