Arizona weather in September 2025

Expect 37°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Arizona in September. Check more long-term weather averages for Arizona in September before you book your next holiday to Arizona in 2025/2026.

  • 37°C maximum daytime temperature in September in Arizona (Phoenix)37
    37°C max day temperature
  • 11 hours of sunshine per day
  • 3 days with some rainfall in September in Arizona (Phoenix)3
    3 days with some rainfall
  • 21°C minimum night-time temperature in September in Arizona (Phoenix)21
    21°C min night temperature
  • 12 hours of daylight per day in September in Arizona (Phoenix)12
    12 hours of daylight per day
  • Very high heat & humidity in September in Arizona (Phoenix)VH
    Very High heat & humidity
  • 23 mm monthly rainfall in September in Arizona (Phoenix)23
    23 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Arizona (Phoenix)8
    8 (Very High) UV index

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The September weather guide for Arizona (Phoenix) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Arizona destinations

Below are average maximum temperatures at popular countries, regions and places in Arizona in September. Select a holiday destination to see more weather parameters.

All Arizona destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Arizona

How hot is it in Arizona in September?

Daytime temperatures usually reach 37°C in Phoenix, Arizona in September with very high heat and humidity, falling to 21°C at night.

How sunny is it in Arizona in September?

There are normally 11 hours of bright sunshine each day in Phoenix, Arizona in September - that's 88% of daylight hours.

Does it ever rain in Arizona in September?

There are usually 3 days with some rain in Phoenix, Arizona in September and the average monthly rainfall is 23mm.

Arizona September sunrise & sunset times

Browse the sunrise and sunset times for Arizona in September 2025. Select a month to view Arizona sunrise and sunset times for the next 12 months. The Arizona sunrise and sunset times shown below are for Phoenix.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:03 18:53
Monday, 15th September 2025 06:12 18:34
Tuesday, 30th September 2025 06:22 18:14

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