Walnut Canyon National Monumnet will be closing at 3:00 PM on December 24th and will be closed on December 25th.
- November–June — 9:00 AM until 5:00 PM MST
- June–October — 8:00 AM until 5:00 PM MST
Access to the Island Trail closes at 4:00 PM, and access to the Rim Trail closes at 4:30 PM.
The park entrance road, trails, and the visitor center are open year round, except on December 25.
NOTE: Most of Arizona does not observe Daylight Savings Time. The state is on Mountain Standard Time year-round.