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Mark One Tank Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  |  | | | | | |  | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 91°FHi: 33°C | Lo: 63°FLo: 17°C | Hi: 91°FHi: 33°C | Lo: 63°FLo: 17°C | Hi: 93°FHi: 34°C | Lo: 64°FLo: 18°C | Hi: 94°FHi: 34°C | Lo: 65°FLo: 18°C | Hi: 94°FHi: 34°C | Lo: 65°FLo: 18°C | Hi: 94°FHi: 34°C | Lo: 66°FLo: 19°C |
| POP: 20% | POP: 10% | POP: 10% |
POP = Probability of Precipitation.
Weather Outlook Updated: 302 AM MST Sun Aug 23 2026 
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Mark One Tank Forecast Discussion
Issued: 200 AM MST Sun Aug 23 2026
Discussion
...High pressure aloft was centered over New Mexico Sunday morning. It is expected that the high center will slowly drift southward through about Tuesday then westward becoming centered over southeast Arizona by Friday/Saturday. Look for daily chances for showers/thunderstorms across northern Arizona through Tuesday, with diminished chances later in the week as a drier and more stable air mass develops over northern Arizona.
For Today...Monsoon moisture will remain in place. As a result...