When to go · Phoenix
Phoenix in September
Avoid month. Listed as a month to avoid: Jun–Aug (extreme heat), late Jul–Sep monsoon storms.
Key facts
- Verdict
- Avoid
- Temperature
- 38°C100°F / 26°C79°F
- average high / low
- Rain days
- 3
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Listed as a month to avoid: Jun–Aug (extreme heat), late Jul–Sep monsoon storms.
Weather in September
- PhoenixHighs around 38 °C, lows around 26 °C, rain on about 3 daysHighs around 100 °F, lows around 79 °F, 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 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 in the low desert, and July–September monsoon storms bring flash floods in canyons.
Festivals and holidays
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 and prices
- 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.
What to pack
- Light, breathable clothes, a sun hat and sunscreen