Arizona weather in May
May splits Arizona wide open: Phoenix runs 95° afternoons while Flagstaff sees real snow.
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 92–95°, nights 62–70°, and 0.1–0.2 in of rain in a typical May.
Red Rock Country
Highs near 84°, nights around 53°, and 0.7 in of rain in a typical May.
| Place | Highs / lows | Wet days | The short version |
|---|---|---|---|
| Sedona | 84° / 53° | 2 | Warm, dry, and long-lit: the trails' finest hour. |
High Country
Highs 68–70°, nights 35–36°, and 0.4–0.8 in of rain in a typical May.
| Place | Highs / lows | Wet days | Snow | The short version |
|---|---|---|---|---|
| Flagstaff | 68° / 35° | 2 | 1.1 in | Warm afternoons, freezing dawns, and pines that smell like butterscotch. |
| Grand Canyon | 70° / 36° | 1 | — | The window opens: comfortable up here, workable down there. |
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.