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Thumb Lake Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  |  | | |  |  | | |  |
| Partly Cloudy | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Rain/Snow Showers | Chance of T-Storm | Snow and Rain | Snow Showers | Mostly Clear | Mostly Sunny | Partly Cloudy | Clearing |
| Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 40°FHi: 4°C | Lo: 29°FLo: -2°C | Hi: 35°FHi: 2°C | Lo: 25°FLo: -4°C | Hi: 41°FHi: 5°C | Lo: 29°FLo: -2°C | Hi: 41°FHi: 5°C |
| POP: 30% | POP: 80% | POP: 90% | POP: 80% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 331 AM MDT Wed Oct 21 2026 
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Issued: 448 AM MDT Wed Oct 21 2026
Key Messages
- Above average temperatures continue Wednesday and Thursday ahead of the next storm system.
- Increasing winds Thursday, strongest east of the Divide and across the wind corridor ranging from 40 to 55 mph gusts likely (80-90% confidence).
- Increasing rain chances Thursday morning and throughout the day with mountain snow likely for western mountains later in the afternoon and overnight into Friday, spreading to eastern mountains Friday evening.
- A cold front pushes through Friday morning,...