Weather WorldPoston, AZ Weather Forecast
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Poston Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | |  | | | | | | |
| Clear | Windy | Mostly Clear | Windy | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny | Clear | Mostly Sunny |
| Lo: 77°FLo: 25°C | Hi: 103°FHi: 39°C | Lo: 75°FLo: 24°C | Hi: 102°FHi: 39°C | Lo: 73°FLo: 23°C | Hi: 102°FHi: 39°C | Lo: 75°FLo: 24°C | Hi: 104°FHi: 40°C | Lo: 75°FLo: 24°C | Hi: 106°FHi: 41°C | Lo: 75°FLo: 24°C | Hi: 105°FHi: 41°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1206 AM MST Tue Sep 15 2026 
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Issued: 305 AM MST Tue Sep 15 2026
Key Messages
- The combination of abundant moisture and a weather system moving into the region will help to bring periods of showers and thunderstorms across south-central and eastern Arizona through Wednesday.
- The main forecast concern will be heavy rainfall and localized flash flooding from around the Phoenix metro into the higher terrain north and east of Phoenix.
- Shower and thunderstorm chances will greatly diminish by Thursday and generally come to an end starting Friday.
- Near normal temperat...