Phoenix Weather in September

Average temperatures, rainfall and packing tips for Phoenix, United States in September

🌡️ Avg high
40°C
🌙 Avg low
26°C
🌧️ Rainfall
~0 mm
📊 Warmth rank
#4 of 12

September in Phoenix at a glance

September in Phoenix is typically very hot, with average daytime highs around 40°C and nights near 26°C. Temperature-wise it sits mid-range for Phoenix (the 4th warmest month).

September is essentially dry in Phoenix - rainfall is negligible on average.

What to pack for Phoenix in September

Phoenix - year at a glance

HighLow · September highlighted
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Is September a good time to visit Phoenix?

🧳 September is seriously hot in Phoenix. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday.

If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.

Other months in Phoenix

September in other cities

← Phoenix weather tomorrow (live)

FAQ

How hot is Phoenix in September?

In September, Phoenix averages a daytime high of about 40°C and a night-time low of around 26°C, based on recent historical data.

Does it rain in Phoenix in September?

September is essentially dry in Phoenix - rainfall is negligible on average.

Is September a good time to visit Phoenix?

September is seriously hot in Phoenix. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in Phoenix are usually March, April, November and December.