Cavity Lake, MT Weather Forecast
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Cavity Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
| Sunny | Partly Cloudy | Sunny | Partly Cloudy | Rain Showers | Chance of T-Storm | Rain and Snow | Snow Showers | Snow Showers | Snow Showers | Snow Showers | Snow Showers |
| Hi: 71°FHi: 22°C | Lo: 35°FLo: 2°C | Hi: 71°FHi: 22°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 29°FLo: -2°C | Hi: 49°FHi: 9°C | Lo: 21°FLo: -6°C | Hi: 49°FHi: 9°C | Lo: 25°FLo: -4°C | Hi: 59°FHi: 15°C | Lo: 29°FLo: -2°C |
| POP: 80% | POP: 100% | POP: 100% | POP: 100% | POP: 60% | POP: 30% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 350 AM MDT Thu Oct 08 2026 

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Issued: 1253 AM MDT Thu Oct 8 2026
Key Messages
- Very warm, dry and occasionally breezy through Friday. Fire concerns will remain elevated, and may be critical in some areas on Friday with increased winds and lower humidities.
- Cold front arrives early Saturday, then much cooler Saturday night through Monday; this will be the coolest air mass yet of the fall. Many locations could see their first freeze of the season Sunday night or Monday night.
- Strong weather system arrives this weekend. Increasing confidence for mountains/foothill...
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