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Johnson Reservoir Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY |
 |  |  |  |  | | | | |  | | |
| Partly Cloudy | Partly Cloudy | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 56°FLo: 13°C | Hi: 88°FHi: 31°C | Lo: 56°FLo: 13°C | Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 90°FHi: 32°C | Hi: 90°FHi: 32°C Lo: 63°FLo: 17°C | Hi: 90°FHi: 32°C Lo: 63°FLo: 17°C | Lo: 63°FLo: 17°C | Hi: 88°FHi: 31°C | Lo: 61°FLo: 16°C | Hi: 87°FHi: 31°C |
| POP: 10% | POP: 20% | POP: 40% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 PM MDT Tue Sep 01 2026 
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Issued: 602 PM MDT Tue Sep 1 2026
Key Messages
- Warmer and drier conditions expected today through Friday.
- Only a slight chance for showers and thunderstorms today and tomorrow, with the greatest chances in the high country.
- Return of better moisture by the weekend with an increasing chance for showers and thunderstorms across the high country.
Discussion
/Through Tuesday/... Issued at 1245 PM MDT Tue Sep 1 2026
GOES-19 satellite imagery shows some cumulus clouds mainly in our far western high country. Radar shows light rain lingerin...