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Swamp Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  |  | |  | |  | | | |
| Patchy Fog | Sunny | Patchy Fog | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 36°FLo: 2°C | Hi: 73°FHi: 23°C | Lo: 44°FLo: 7°C | Hi: 74°FHi: 23°C | Lo: 47°FLo: 8°C | Hi: 68°FHi: 20°C | Lo: 44°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 44°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 76°FHi: 24°C |
| POP: 70% | POP: 90% | POP: 80% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1122 AM PDT Tue Sep 15 2026 
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Issued: 254 PM MDT Tue Sep 15 2026
Discussion
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KEY MESSAGES:- Cool and showery conditions are expected from Yaak to Glacier National Park through this evening.
- Warming and drying trend expected through Wednesday.
- Shower and Thunderstorm pattern develops Thursday and continues into Saturday.
- Another warming and drying trend Sunday through early next week.
Satellite imagery this afternoon shows a large upper level low digging southwards from Vancouver Island towards northern California. To the east of this feature, a steady stream o...