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Cascade Reservoir 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 | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of T-Storm | Mostly Sunny | Chance of Showers | Sunny |
| Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 90°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Sat Aug 22 2026 
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Issued: 1127 PM MDT Sat Aug 22 2026
Key Messages
- Scattered showers and thunderstorms this afternoon capable of briefly heavy rainfall and gusty winds.
- Additional scattered showers and thunderstorms Sunday afternoon and early evening ahead of a cold front bringing drier and breezy conditions.
- Cooler in most areas Monday before temperatures trend closer to, if not above average by mid-week. A few showers and thunderstorms will be around most days next week, primarily across Southwest MT.