Mosquito Reservoir, MT Weather Forecast
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Mosquito Reservoir Weather Forecast
| TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Mostly Sunny | Chance of T-Storm | Mostly Clear | Mostly Clear | Mostly Sunny | Chance of Showers | Mostly Sunny |
| Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 331 PM MDT Thu Aug 20 2026 

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Mosquito Reservoir Forecast Discussion
Issued: 100 PM MDT Thu Aug 20 2026
Key Messages
- Typical mid to late August conditions are expected through the weekend with warm daytime conditions and comfortable nights.
- Dry weather is expected until late Saturday when the southwest monsoonal flow will bring another risk of thunderstorms.
- Warm and dry conditions resume next week as the western ridge rebounds.
Discussion
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WEATHER PATTERN OVERVIEW: NW upper flow over the area will give way to a building upper ridge over the West into Saturday. This wi...
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