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Keystone Tank Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  | |  | |  |  | |  | | | |
| Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Sunny | Mostly Clear | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 67°FLo: 19°C | Hi: 92°FHi: 33°C | Lo: 68°FLo: 20°C | Hi: 94°FHi: 34°C | Lo: 69°FLo: 21°C | Hi: 94°FHi: 34°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 96°FHi: 36°C | Lo: 70°FLo: 21°C | Hi: 95°FHi: 35°C Lo: 70°FLo: 21°C |
| POP: 10% | POP: 30% | POP: 20% | POP: 40% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 AM MST Sun Aug 16 2026 
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Issued: 1259 AM MST Sun Aug 16 2026
Discussion
...Today...Limited moisture across much of northern Arizona will keep the threat for storms today fairly low. Much like yesterday, coverage looks to remain fairly isolated, and generally focused over the higher terrain. A weak wave does look to move up the Colorado River Valley today, which may help to promote a little more coverage across western Arizona given the added upward motion. Some brief heavy downpours and Gusty outflow winds will be the main thr...