Lagoon Lake, MT Weather Forecast
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Lagoon Lake Weather Forecast
| TONIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
| Patchy Fog | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Patchy Fog | Chance of Rain | Mostly Cloudy | Partly Cloudy | Rain and Snow |
| Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 50°FHi: 10°C | Lo: 35°FLo: 2°C | Hi: 46°FHi: 8°C | Lo: 30°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 30°FLo: -1°C | Hi: 45°FHi: 7°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1122 PM MST Tue Nov 10 2026 

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Issued: 149 PM MST Tue Nov 10 2026
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KEY MESSAGES:- Wednesday through Friday Fog & Low Cloud Potential: Strong high pressure increasing likelihood of valley inversions.
- Pattern Shift: A Pacific system will tap into atmospheric river moisture beginning Saturday, snow levels stay relatively high.
- Further cooling early to mid next week with potential for snow levels to lower further.
A lingering plume of atmospheric moisture will maintain showers through tonight, mainly north of Interstate 90. Snow levels remain high and th...
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