Circle Reservoir, MT Weather Forecast
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Circle Reservoir Weather Forecast
| REST OF TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Windy | Windy | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1241 PM MDT Mon Sep 14 2026 

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Issued: 321 PM MDT Mon Sep 14 2026
Key Messages
- Additional rain totals for the remainder of today and tonight are expected to be less than 0.20".
- Sustained winds will be 20 to 30 mph this afternoon and evening, while gusts have the potential to reach 60 mph.
- Precipitation is currently anticipated to begin early Friday morning and last through Sunday night.
Discussion
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SYNOPTIC SETUP: The low pressure system that brought rain showers this morning has begun to exit northeastward. Low-level moisture associated with the backside of th...
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