James Lake, MT Weather Forecast
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James Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY |
| Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Rain and Snow | Rain and Snow | Chance of Snow | Chance of Snow | Chance of Snow |
| Lo: 36°FLo: 2°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 36°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 25°FLo: -4°C | Hi: 35°FHi: 2°C | Lo: 21°FLo: -6°C | Hi: 36°FHi: 2°C |
| POP: 60% | POP: 80% | POP: 80% | POP: 50% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 PM MDT Tue Oct 06 2026 

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Issued: 1241 PM MDT Tue Oct 6 2026
Discussion
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KEY MESSAGES:- Beautiful, mild, and unseasonably warm weather continues through Friday.
- Gusty winds Friday afternoon will lead to near-critical fire weather conditions across southwest Montana.
- Confidence continues to grow for a sharp transition to a cold, winter-like pattern this weekend.
Warm and dry high pressure remains firmly in control across the Northern Rockies for the remainder of this week. Beautiful and unseasonably warm days are expected through Friday, with high temperatu...
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