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Flathead Indian Reservation Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  |  |  |  |  | | | | |
| Mostly Cloudy | Mostly Cloudy | Clearing | Mostly Sunny | Mostly Clear | Partly Cloudy | Chance of Rain | Chance of Rain | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 35°FLo: 2°C | Hi: 56°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 36°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C |
| POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 PM MDT Sat Sep 26 2026 
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Issued: 1215 PM MDT Sat Sep 26 2026
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KEY MESSAGES:- Mild conditions the rest of the week with only minor disturbances.
- Shortwave Monday to bring breezy conditions.
- Potential for a cold front Friday into the weekend, but confidence is low.
- Chances are increasing for a warm, dry early October beyond the 7 day forecast.
Overall mild conditions are expected the rest of the week. The weather patterns we expect throughout the week are: weak zonal (west-to-east) flow aloft, a shortwave on Monday in split flow, and some weak rid...