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Flume Trail Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | | |  |  |  | | |  |  |  |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Chance of Showers | Partly Cloudy | Chance of Showers | Chance of T-Storm | Clearing | Sunny | Mostly Clear |
| Hi: 59°FHi: 15°C | Lo: 49°FLo: 9°C | Hi: 55°FHi: 13°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C |
| POP: 70% | POP: 50% | POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 102 PM MDT Sat Sep 19 2026 
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Issued: 123 PM MDT Sat Sep 19 2026
Key Messages
- Risk for excessive rainfall this afternoon into Sunday across eastern Wyoming and the Black Hills.
- Areas of fog possible tomorrow morning across much of western South Dakota.
- Gradual warming with drier conditions this week.
Discussion
...(This Evening Through Saturday) Issued at 122 PM MDT Sat Sep 19 2026
Current analysis shows the closed low continuing to spin and move slowly east into western Wyoming this afternoon. Downstream of this area of low pressure much of eastern Wyoming and w...