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| TODAY | TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Rain | Chance of Rain | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Rain | Chance of T-Storm | Chance of Rain |
| Hi: 70°FHi: 21°C | Lo: 46°FLo: 8°C | Hi: 56°FHi: 13°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 76°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C | Lo: 40°FLo: 4°C |
| POP: 50% | POP: 50% | POP: 100% | POP: 90% | POP: 70% | POP: 20% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 AM MDT Sun Sep 06 2026 
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Issued: 342 AM MDT Sun Sep 6 2026
Discussion
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KEY MESSAGES:- A few strong thunderstorms are possible this afternoon and evening.
- Significant rain event for much of the Northern Rockies Sunday through Tuesday morning.
- Gradual drying trend develops mid-week alongside morning valley fog.
- 72% of ensemble clusters depict another weather-maker to impact the Northern Rockies next weekend.
Very impressive thunderstorms occurred overnight across western Montana! Besides the lightning show, these were heavy rain producers with reports of c...