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Lake Reservoir Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Rain | Mostly Clear | Mostly Clear | Chance of Rain | Chance of Rain |
| Lo: 57°FLo: 14°C | Hi: 83°FHi: 28°C | Lo: 52°FLo: 11°C | Hi: 73°FHi: 23°C | Lo: 51°FLo: 11°C | Hi: 74°FHi: 23°C Lo: 50°FLo: 10°C | Hi: 74°FHi: 23°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C | Hi: 78°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 78°FHi: 26°C Lo: 51°FLo: 11°C | Lo: 53°FLo: 12°C | Hi: 75°FHi: 24°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 PM MDT Mon Aug 31 2026 
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Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 440 PM MDT Mon Aug 31 2026
Key Messages
- Showers and thunderstorms will return and continue through the next several days
- Critical to near-critical fire conditions for thunderstorms expected Tuesday for thunderstorms and wind/humidity Wednesday
- Cooler temperatures expected from Wednesday onward as low pressure settles in across the western U.S.
Discussion
... Issued at 104 PM MDT Mon Aug 31 2026
A weak "wave" will lift north across eastern Idaho through tomorrow morning, bringing an increase in showers and thunderstorms includ...