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Lake Marshall Weather Forecast
| TODAY | TONIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 | | |  |  |  | | |  | | |  |
| Snow | Snow | Chance of Snow | Clearing | Mostly Sunny | Fog | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny | Mostly Clear |
| Hi: 36°FHi: 2°C | Lo: 23°FLo: -5°C | Hi: 40°FHi: 4°C | Lo: 23°FLo: -5°C | Hi: 46°FHi: 8°C | Lo: 25°FLo: -4°C | Hi: 50°FHi: 10°C | Lo: 26°FLo: -3°C | Hi: 55°FHi: 13°C | Lo: 26°FLo: -3°C | Hi: 56°FHi: 13°C | Lo: 35°FLo: 2°C |
| POP: 70% | POP: 90% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 AM MDT Sun Oct 11 2026 
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Issued: 228 AM MDT Sun Oct 11 2026
Discussion
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KEY MESSAGES:- Cool, wet weather with winter storm along the Continental Divide continues through the weekend.
- Hard freeze in valleys of western Montana early this week.
- Warming up to above average conditions in the long term.
The upper level low over the Pacific northwest continues to pump moisture up from the south where it interacts with a cold air mass from the north today. The main area where the two air masses collide is along the Continental Divide, and there`s a broad area of ...