Arizona weather in July

July splits Arizona wide open: Phoenix runs 107° afternoons while Flagstaff tops out near 82°.

Based on 5 weather stations. Five stations from the desert floor to seven thousand feet — Arizona is really two climates stacked a mile apart, and the rows below keep them separate.

The Desert

Highs 100–107°, nights 76–85°, and 0.9–2.2 in of rain in a typical July.

Place	Highs / lows	Wet days	The short version
Phoenix	107° / 85°	2	Heat, dust, and storms — monsoon season in one breath.
Tucson	100° / 76°	5	Thunderheads build over the Catalinas and everybody stops to watch.

Red Rock Country

Highs near 97°, nights around 68°, and 1.6 in of rain in a typical July.

Place	Highs / lows	Wet days	The short version
Sedona	97° / 68°	3	Clear mornings, violent afternoons, and canyons that fill fast.

High Country

Highs 82–85°, nights 50–51°, and 2.3–2.6 in of rain in a typical July.

Place	Highs / lows	Wet days	The short version
Flagstaff	82° / 51°	6	Cool mountain days broken open by afternoon thunder.
Grand Canyon	85° / 50°	4	Afternoon storms up top, punishing heat all the way down.

Each place above has its own page for the full story — what the month feels like, what to pack, and whether the timing is right.

Where to go in July, across the whole country ›