Blue Stem Reservoir, MT Weather Forecast
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Blue Stem Reservoir Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY | TUESDAY |
| Mostly Clear | Sunny | Partly Cloudy | Sunny | Partly Cloudy | Rain | Chance of Snow | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 31°FLo: -1°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 70°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 29°FLo: -2°C | Hi: 45°FHi: 7°C Lo: 21°FLo: -6°C | Hi: 45°FHi: 7°C Lo: 21°FLo: -6°C | Hi: 45°FHi: 7°C Lo: 21°FLo: -6°C | Hi: 45°FHi: 7°C Lo: 21°FLo: -6°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 326 PM MDT Tue Oct 20 2026 

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Issued: 118 PM MDT Tue Oct 20 2026
Key Messages
- Dry weather conditions will continue into Thursday night.
- Temperatures will remain at or above seasonable norms as well.
- Precipitation chances increase into Friday, with the best chance Friday and Friday night.
- Cooler and drier weather expected for the weekend, with that continuing into early next week.
Discussion
... A weak cold front passed SE through the CWA overnight with a weak surface high expected to pass east over southern Sask overnight tonight.
A fairly large upper low off the...
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