Phoenix in September

Listed as a month to avoid: Jun–Aug (extreme heat), late Jul–Sep monsoon storms.

September is rated avoid. These months rate higher:

• NovemberGreatInside Phoenix's best window: Nov–Apr.
• DecemberGreatInside Phoenix's best window: Nov–Apr.
• JanuaryGreatInside Phoenix's best window: Nov–Apr.
• FebruaryGreatInside Phoenix's best window: Nov–Apr.

• PhoenixHighs around 38 °C (100 °F), lows around 26 °C (79 °F), rain on about 3 daysHighs around 100 °F (38 °C), lows around 79 °F (26 °C), rain on about 3 days
• Desert Southwest, United States · Las Vegas, Phoenix, Grand Canyon, Zion, Bryce, Death Valleyfine

  Spring and autumn are park season; June–August tops 40–45 °C (104–113 °F) in the low desert, and July–September monsoon storms bring flash floods in canyons.Spring and autumn are park season; June–August tops 104–113 °F (40–45 °C) in the low desert, and July–September monsoon storms bring flash floods in canyons.

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

• Labor Day big impact

  1st Monday of September · United States

  End of summer; last big road-trip weekend.

Crowds · United States overall

Medium

Prices · United States overall

Medium

United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.

Weather, crowds and prices for any two months in Phoenix, side by side.

• Light, breathable clothes, a sun hat and sunscreen

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