Phoenix Az Weather September 2024. 1 day (<1%) 2021 total: Weather phenomena recorded in previous years in phoenix โ water temperature in localities in phoenix โ weather forecast for phoenix in september โ.
In september, during the warmest part of the afternoon, the temperature can often get as high as 107ยฐf / 42ยฐc, and at the end of the night, it can get as low as 51ยฐf / 11ยฐc. Free long range weather forecast for phoenix, arizona september 2024.