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St. Marks School, AZ Weather Forecast
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St. Marks School Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  | | |  |  |  | | | | |
| Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Lo: 88°FLo: 31°C | Hi: 115°FHi: 46°C | Lo: 87°FLo: 31°C | Hi: 114°FHi: 46°C | Lo: 89°FLo: 32°C | Hi: 112°FHi: 44°C | Lo: 87°FLo: 31°C | Hi: 109°FHi: 43°C | Lo: 85°FLo: 29°C | Hi: 106°FHi: 41°C | Lo: 82°FLo: 28°C | Hi: 103°FHi: 39°C |
| POP: 10% | POP: 10% | POP: 30% | POP: 10% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM MST Tue Aug 25 2026 
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Issued: 434 PM MST Tue Aug 25 2026
Key Messages
- Extreme Heat Warnings remain in effect through Saturday across much of the area.
- Lower desert highs in excess of 110 degrees and overnight lows in the eighties to lower nineties will be common this week, resulting in Major to Extreme Heat Risk.
- Monsoon storm chances will be very limited before a pattern change occurs this weekend, which will result in an increase in moisture and promote temperatures dropping closer to late August normals by Sunday or early next week.
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