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High Service Reservoir Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Smoke | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Chance of Rain | Chance of Rain | Chance of Rain |
| Lo: 46°FLo: 8°C | Hi: 80°FHi: 27°C | Lo: 46°FLo: 8°C | Hi: 85°FHi: 29°C | Lo: 46°FLo: 8°C | Hi: 80°FHi: 27°C | Lo: 46°FLo: 8°C | Hi: 76°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 40°FLo: 4°C | Hi: 70°FHi: 21°C |
| POP: 40% | POP: 40% | POP: 50% | POP: 30% | POP: 40% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1207 PM MDT Mon Aug 24 2026 
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Meteorlogic Glosserator
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Issued: 1252 PM MDT Mon Aug 24 2026
Discussion
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KEY MESSAGES:- Warming trend today through mid week.
- Thunderstorm chances expand northward Tuesday and Wednesday. Gusty outflow winds and lightning as the main concerns.
- Cooler temperatures this weekend, shower/thunderstorm chances continue.
Through Wednesday: High pressure will rebuild across the Northern Rockies today, bringing stable conditions and light winds. Temperatures will trend warmer, peaking around 10 degrees above seasonal norms Tuesday and Wednesday. Air quality may degr...