Phoenix, Arizona weather in May

Averages from 2021–2025 (155 days of record).

Average high: 95°F
Average low: 68°F
Rainy days: ~0 per month
Total precipitation: 0.1 in
Warmest recorded: 105°F
Coldest recorded: 55°F

Expect May days in Phoenix, Arizona to top out around 95°F and cool to about 68°F overnight, with roughly 0 days of measurable rain across the month. In recent years May has ranged from 55°F to 105°F.

Other months

January February March April June July August September October November December

Current Phoenix, Arizona forecast → · Historical data by Open-Meteo (ERA5).