Weather WorldUpper Arcadia Reservoir, ID Weather Forecast
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Upper Arcadia Reservoir Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  | | | | | | |  |  |  |  |
| Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Clear | Mostly Clear | Chance of Rain | Chance of Rain | Chance of Rain | Rain and Snow |
| Hi: 79°FHi: 26°C | Lo: 47°FLo: 8°C | Hi: 78°FHi: 26°C | Lo: 46°FLo: 8°C | Hi: 78°FHi: 26°C | Hi: 78°FHi: 26°C Lo: 46°FLo: 8°C | Hi: 78°FHi: 26°C Lo: 46°FLo: 8°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Hi: 55°FHi: 13°C Lo: 42°FLo: 6°C | Hi: 55°FHi: 13°C Lo: 42°FLo: 6°C | Lo: 34°FLo: 1°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 AM MDT Tue Oct 06 2026 
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Issued: 1239 AM MDT Tue Oct 6 2026
Key Messages
- A few showers possible along the Utah border today
- Dry conditions with ABOVE AVERAGE temperatures will continue until the weekend
- Cooler and wetter conditions expected starting Saturday, with details to be worked out in the coming days
Discussion
... Issued at 1149 PM MDT Mon Oct 5 2026
We are still expecting a few showers, and maybe a thunderstorm today closer to the Utah border, throughout the day. The low continues to track farther south, and it may end up far enough south that our f...