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St. Marks School, AZ Weather Forecast
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St. Marks School Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  |  | | | | |  | | |
| Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Sunny | Clear | Mostly Sunny | Clear | Sunny | Partly Cloudy | Partly Sunny | Clear | Mostly Sunny |
| Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 62°FLo: 17°C | Hi: 76°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 76°FHi: 24°C | Lo: 58°FLo: 14°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 82°FHi: 28°C | Lo: 61°FLo: 16°C | Hi: 83°FHi: 28°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 401 PM MST Wed Oct 21 2026 
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Issued: 452 PM MST Wed Oct 21 2026
Key Messages
- A strong low pressure system will support multiple rounds of showers and thunderstorms, some of which may be strong to severe through Thursday afternoon across much of central and eastern Arizona.
- Moderate to heavy rainfall with totals over one inch may result in areas of flash flooding across south-central Arizona with a focus on upslope, terrain areas.
- Drier air filtering into the region by the end of the week will lead to more benign weather conditions during the weekend and throu...