Weather WorldUpper Carpp Lake, MT Weather Forecast
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Upper Carpp Lake Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  | |  |  | | | | | |
| Mostly Sunny | Chance of Rain | Snow | Rain and Snow | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Snow | Rain and Snow | Rain and Snow |
| Hi: 65°FHi: 18°C | Lo: 36°FLo: 2°C | Hi: 45°FHi: 7°C | Lo: 25°FLo: -4°C | Hi: 45°FHi: 7°C | Lo: 25°FLo: -4°C | Hi: 46°FHi: 8°C | Lo: 25°FLo: -4°C | Hi: 46°FHi: 8°C | Lo: 25°FLo: -4°C | Hi: 46°FHi: 8°C | Lo: 25°FLo: -4°C |
| POP: 50% | POP: 100% | POP: 90% | POP: 20% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 115 AM MDT Thu Oct 22 2026 
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Issued: 134 PM MDT Wed Oct 21 2026
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KEY MESSAGES:- Mild daytime temperatures through Thursday.
- Patchy valley fog around sunrise each morning.
- Significant weather change coming Thursday night into Friday.
Enjoy the unseasonable warmth as it will continue through Thursday. Due to strong valley inversions causing stability, tomorrow morning will again give us a chance for patchy valley fog.
Late Thursday afternoon an area of showers moves up from the south. A thunderstorm or two will be possible, especially in southern Clea...