Weather WorldLower Keystone Tank, AZ Weather Forecast
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Lower Keystone Tank Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Mostly Cloudy | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Mostly Clear | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 69°FLo: 21°C | Hi: 94°FHi: 34°C | Lo: 68°FLo: 20°C | Hi: 96°FHi: 36°C | Lo: 69°FLo: 21°C | Hi: 98°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 98°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 97°FHi: 36°C | Hi: 96°FHi: 36°C Lo: 70°FLo: 21°C | Hi: 96°FHi: 36°C Lo: 70°FLo: 21°C |
| POP: 10% | POP: 10% | POP: 10% | POP: 10% | POP: 10% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1132 PM MST Sun Aug 23 2026 
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Lower Keystone Tank Forecast Discussion
Issued: 1037 PM MST Sun Aug 23 2026
Discussion
...Upper-air analysis shows the 500mb subtropical high pressure cell centered across central New Mexico, with a northeastward-moving shortwave trough draped across the Yavapai and Coconino County border. This system is actively supporting showers and thunderstorms across western Yavapai and Coconino Counties, while aiding convective initiation along portions of the Mogollon Rim.
Moderate monsoon conditions persist today with storms drifting northeastward on average. The forecast favors ...