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Stoyanoff Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | | |  |  |  |  |  | | | |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Chance of Rain | Chance of Snow | Snow and Rain | Partly Cloudy | Partly Cloudy | Chance of Snow | Partly Cloudy | Partly Cloudy |
| Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 49°FHi: 9°C | Lo: 23°FLo: -5°C | Hi: 41°FHi: 5°C Lo: 22°FLo: -6°C | Hi: 41°FHi: 5°C Lo: 22°FLo: -6°C | Hi: 45°FHi: 7°C | Hi: 45°FHi: 7°C Lo: 23°FLo: -5°C | Hi: 45°FHi: 7°C Lo: 23°FLo: -5°C |
| POP: 40% | POP: 100% | POP: 70% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 336 PM MDT Tue Oct 20 2026 
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Issued: 507 PM MDT Tue Oct 20 2026
Key Messages
- Temperatures will return to unseasonably warm levels on Wednesday and continue until a period of cooler than average temperatures beginS Friday, which continueS through the beginning of the following week.
- Pacific system will bring rain and mountain snow beginning Thursday night and continuing through early Saturday morning.
- Gusty winds develop Friday afternoon and continue through Friday night with the highest gusts along the Rocky Mountain Front and Central MT.