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Castle Bluff Rapids Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Mostly Sunny | Chance of T-Storm | Chance of Showers | Chance of Showers | Partly Sunny | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Rain Showers | Chance of Showers |
| Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 64°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Hi: 73°FHi: 23°C Lo: 45°FLo: 7°C | Hi: 73°FHi: 23°C Lo: 45°FLo: 7°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C |
| POP: 50% | POP: 50% | POP: 20% | POP: 50% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Sun Sep 13 2026 
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Issued: 111 PM MDT Sun Sep 13 2026
Key Messages
- Showers and a few thunderstorms this evening
- Windy periods through Monday.
- After a cool start, a warming trend develops later this week through the weekend.
Discussion
...- Meteorological Overview:
An upper level low positioned over eastern WA this afternoon shifts east across the Northern Rockies overnight, emerging along the AB/MT border Monday morning then continues east through Monday afternoon. Enhanced mid-level flow ahead of the trough and afternoon heating/mixing continues is pro...