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Weir Reservoir Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
 |  |  |  |  | |  |  | | |  | |
| Mostly Clear | Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Rain/Snow Showers | Rain/Snow Showers | Rain/Snow Showers | Snow Showers | Snow Showers |
| Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 55°FHi: 13°C | Lo: 39°FLo: 4°C | Hi: 50°FHi: 10°C | Lo: 39°FLo: 4°C | Hi: 50°FHi: 10°C | Lo: 31°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 30°FLo: -1°C | Hi: 49°FHi: 9°C |
| POP: 90% | POP: 100% | POP: 100% | POP: 100% | POP: 100% | POP: 70% | POP: 60% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1242 PM MDT Thu Oct 08 2026 
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Issued: 610 PM MDT Thu Oct 8 2026
Key Messages
.KEY MESSAGES, Issued 255 PM MDT Thu Oct 8 2026...- Widespread moderate to heavy rainfall threat increases late Saturday through Sunday as a remnant tropical system and associated deep moisture lift through and interact with an approaching trough. Widespread water amounts of 1 to 3 inches are forecast, with locally higher amounts in excess of 3 inches possible, particularly in high terrain and areas along and northwest of the circulation track.
- There is also a wind threat associated w...