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Jean Reservoir Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Sunny | Partly Cloudy | Mostly Sunny | Mostly Cloudy | Partly Sunny | Partly Cloudy | Partly Cloudy | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Rain | Chance of T-Storm |
| Hi: 87°FHi: 31°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C | Hi: 89°FHi: 32°C Lo: 59°FLo: 15°C | Hi: 89°FHi: 32°C Lo: 59°FLo: 15°C | Lo: 60°FLo: 16°C | Hi: 93°FHi: 34°C Lo: 63°FLo: 17°C | Hi: 93°FHi: 34°C Lo: 63°FLo: 17°C | Lo: 63°FLo: 17°C | Hi: 89°FHi: 32°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM MDT Sun Aug 16 2026 
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Issued: 131 AM MDT Sun Aug 16 2026
Key Messages
- Isolated to scattered heat of the day storms will continue into Monday afternoon.
- Early-Week Passing Trough: A shortwave tracking north of the region Monday Night into Tuesday will bring 30%50% precipitation coverage to the Central Mountains, Montana Divide, and Eastern Highlands.
- Late-Week Heat Surge: Strong Great Basin high-pressure ridging will rebuild mid-to-late week, restoring a dry, late- summer regime with valley highs returning to the 90s.