In July, typical afternoon highs at Zion National Park run around 87°F (hot). Mid-afternoon sun stands about 66° high, and the sun is up from 6:23 AM to 8:52 PM. Shade depends on terrain and tree cover; open viewpoints are fully exposed.
See live sun & real shadows here →| January | 41°F |
| February | 50°F |
| March | 54°F |
| April | 63°F |
| May | 73°F |
| June | 84°F |
| July | 87°F |
| August | 86°F |
| September | 77°F |
| October | 65°F |
| November | 57°F |
| December | 50°F |
Shade depends on terrain and tree cover; open viewpoints are fully exposed. See real building shadows over satellite imagery for any time of day: https://isthereshade.com/?anywhere&at=37.3,-113
Around 8:52 PM local time in mid-July (it shifts through the year). Sunrise is about 6:23 AM.
Zion National Park · Springdale, UT. Data: exact sun position; climate normals from historical weather; live forecast on the interactive view.
Zion National Park pairs two things that pull in opposite directions, genuine desert heat and deep, sun-blocking canyon walls. The red sandstone cliffs above the Virgin River rise high enough to keep long stretches of the canyon floor in shadow at the ends of the day, while the exposed trails and open slickrock take the full force of a southern Utah summer. Afternoon highs near Springdale reach about 87°F in July, with August close behind at 86°F, so where you are and what hour it is decide whether Zion feels pleasant or draining.
In high summer the sun rises around 6:23 AM and sets near 8:52 PM, but as with any deep canyon, the walls hold back first and last light, the floor stays shaded well past sunrise and falls into shadow before the sun is actually down. At 3 PM the sun sits about 66 degrees up out to the southwest, high enough to pour into the main canyon and light the exposed trails and rock through the middle of the day. That is the hottest, most punishing window on any open route.
The strategy the park itself pushes is early starts. Set out soon after that 6:23 sunrise while the canyon floor is still shaded and the air is cool, finish exposed climbs before midday, and treat the early afternoon as time to rest in shade or wade the river. Late afternoon eases again as the walls reclaim the light before the 8:52 sunset. The famous exposed routes, the long open switchbacks and the high, unshaded viewpoints, are the ones to knock out early and to avoid entirely in the heat of the afternoon.
Zion's shade is a matter of aspect and terrain. The narrow slot sections and the north-facing cliff bases hold shadow for much of the day, while the open canyon floor, the slickrock, and the exposed high overlooks bake. The riverside stretches offer the best combination, tree and cliff shade beside cool water, which is why they are the go-to refuge when the heat builds.
Zion is far gentler outside the summer core. April and October afternoons average in the low-to-mid 60s, ideal for the exposed hikes that punish you in July, and even the winter months stay walkable in the 40s and 50s. If your trip lands in high summer, live by the canyon's rhythm, shaded early mornings, river refuge through the hot middle, cool walls again in the evening. To see how the canyon walls and the afternoon sun throw shadow across the floor and trails at your planned hour, check the satellite shadow view for the park.