Square Butte, MT Weather Forecast
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Square Butte Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY |
| Rain Showers | Partly Cloudy | Mostly Sunny | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Sunny | Chance of Showers | Clearing | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 59°FHi: 15°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Hi: 70°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C Lo: 45°FLo: 7°C |
| POP: 20% | POP: 90% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 AM MDT Sat Sep 12 2026 

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Issued: 525 AM MDT Sat Sep 12 2026
Key Messages
-Mountain snow of 1-3" confined to the highest peaks of the Rocky Mountain Front with no expected pass impacts.
-Additional rounds of showers through Sunday bringing rain and gusty winds with any storms that are able to develop Sunday evening.
-Widespread gusty winds Sunday and Monday with High Wind Watch out for the Madison River Valley.
Discussion
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A weak upper-level ridge briefly builds in through Today, bringing cool and mostly dry conditions across the region. On Sunday, the main ...
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