Arizona by month · 12 of 12
Arizona RV rental in December
December falls inside Arizona's best RV window (October to April).
Desert heat becomes unbearable in summer; winter and shoulder months bring pleasant days for hiking and camping in the south.
PickRV
Published by PickRV
December on the ground
Weather & conditions
High 67°F, Low 46°F
December pairs sunny, jacket-weather days with some of the year's best stargazing — the Geminids peak over the southern desert mid-month.
What to do in December
- Geminid meteor nights in southern Arizona's dark skies (mid-December)
- Mild-day rambles through the Tucson valley parks
- Holiday light displays across greater Phoenix
Best-fit rigs: Motorhome · Truck or van
Know before you go
Desert nights drop below freezing more often than visitors expect; the canyon rims and Flagstaff see real snow and ice.
Monsoon thunderstorms July-September bring flash floods in canyons and washes. Summer highs regularly exceed 110F in the south.
From the verified event registry
December events in Arizona
Trip notes
December tips for Arizona
Layer up: shoulder-pattern days can swing from a chilly dawn to t-shirt warmth by afternoon.
Pack rain gear and leveling mats for soft or wet sites.
Carry a weather radio and check forecasts daily — transitional months turn fast.
Keep planning
Plan the Arizona trip
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