Grand Canyon National Park in May
In May, Grand Canyon National Park averages a high of 70°F and a low of 36°F, with 0.4 inches of precipitation (rain plus melted snow). About 517,000 people visit, the 2nd busiest of 12 (very busy). Days are 14 hours 04 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 70° / 36°F
- Precipitation
- 0.4in
- Snow
- 0.1in
- Daylight
- 14h 4m
- Visitors
- 517,000
- Crowds
- Very busy
May is one of the best months to visit: mild weather with very busy crowds.
Higher or lower in the park, expect a different picture: Phantom Rch, AZ at 2,530 ft averages a May high of 91°F and a low of 61°F.
Weather 1991–2020 averages at Grand Canyon NP 2, AZ, 19.6 miles from the park's center, 6,785 ft. Second station lower down: Phantom Rch, AZ, 2,530 ft, 18.1 miles. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in May
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Zion National Park | 84° / 53° | Very busy | Hot |
| Bryce Canyon National Park | 63° / 37° | Very busy | Mild |
| Glen Canyon National Recreation Area | 82° / 53° | Very busy | Hot |
| Lake Mead National Recreation Area | 91° / 65° | Very busy | Very hot |
| Capitol Reef National Park | 74° / 48° | Very busy | Mild, wet |
Closures, reservations and alerts: Grand Canyon National Park on nps.gov
All twelve months at Grand Canyon · National parks to visit in May