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Calypso Trail Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT |
 |  | | | | |  |  |  | | | |
| Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Rain | Rain and Snow | Rain | Rain and Snow | Rain and Snow |
| Hi: 71°FHi: 22°C | Lo: 40°FLo: 4°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 81°FHi: 27°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 31°FLo: -1°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 341 AM MDT Wed Oct 07 2026 
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Issued: 1120 PM MDT Tue Oct 6 2026
Key Messages
- Warm temperatures above normal and mostly clear skies into Friday.
- Friday will be monitored for any Fire Wx concerns as a ridge breaks down and cold front moves through.
- Overcast skies, possible precipitation, and low temperatures anticipated this weekend and into Monday. Isolated snow possible at higher elevations.
Discussion
... Synoptic Setup: Forecast begins with relatively zonal to NW flow from Montana through the PCNW and across SW Canada. To the S, hot high pressure sits over th...