Weather WorldJ J Reservoir, UT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
J J Reservoir Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  |  |  | | | |  |  |  | | |
| Chance of T-Storm | Mostly Clear | Partly Cloudy | Clearing | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy |
| Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 91°FHi: 33°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C Lo: 61°FLo: 16°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C |
| POP: 20% | POP: 10% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1243 AM MDT Tue Aug 18 2026 
J J Reservoir Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
J J Reservoir Weather Map
J J Reservoir Quick Facts
J J Reservoir Forecast Discussion
Issued: 557 AM MDT Tue Aug 18 2026
Key Messages
.KEY MESSAGES, Issued 1047 PM MDT Sun Aug 16 2026...- Scattered convection tonight across northern Utah/SW Wyoming shifting east tomorrow.
- Elevated to locally critical fire weather conditions will occur across central and southern Utah Tuesday with enhanced southwesterly winds coupled with low humidity.
- Moisture increases late in the weekend and into the weekend.
Discussion
, Issued 1036 PM MDT Mon Aug 17 2026... A weak shortwave is moving through the north...