Arizona weather in January

January splits Arizona wide open: Phoenix runs 68° 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 67–68°, nights 41–46°, and 0.8–0.9 in of rain in a typical January.

Place	Highs / lows	Wet days	The short version
Phoenix	68° / 46°	2	Sunglasses at breakfast, light jacket at dinner — desert winter.
Tucson	67° / 41°	2	Warm middays, cold clear nights, mountains dusted white above.

Red Rock Country

Highs near 58°, nights around 34°, and 2.0 in of rain in a typical January.

Place	Highs / lows	Wet days	The short version
Sedona	58° / 34°	4	Cold mornings, gentle afternoons, and the rocks at their reddest.

High Country

Highs 43–44°, nights 18–19°, and up to 20.9 in of snow in a typical January.

Place	Highs / lows	Wet days	Snow	The short version
Flagstaff	43° / 18°	6	20.9 in	Deep snow, hard freezes, and the ski hill running.
Grand Canyon	44° / 19°	4	12.9 in	The rim wears snow and almost nobody is 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.

Where to go in January, across the whole country ›