Zion National Park is very unique in that it has 4 distinct seasons, each bringing different types of visitors to the park to experience the different activities available. The park sits at an elevation from anywhere between 3,700 feet at the valley floor to over 8,700 feet at some of its peaks so even on a given day the temperature can vary wildly.
Spring is a wonderful time to visit Zion. The temperatures during the day average around 75 degrees with lows in the 40’s. There is always potential for snow especially in the higher elevations. Springtime weather is unpredictable with a fair amount of story wet days and a lot of sunny days. If you love seeing wildflowers the best time to come is in May.
During the summer temperatures are typically in the high 90’s but can soar over 100 degrees with lows in the 70’s. During this time, visitors should start their hikes in the early mornings and finish by early afternoon. During July and August there are frequent thunderstorms. It is very important to always be aware of the weather and the potential for flash floods during this time. What seems to be a small stream can turn into a deadly flash flood in minutes especially in the many slot canyons in the park.
Fall is another extremely popular time to visit the park. The temperatures are a bit cooler with average highs in the 70’s to 80’s and lows in the 40’s. The precipitation in the fall is relatively dry which makes for clear and mild days with cool nights. The fall colors usually peak in late October.
Although Zion has a very calm winter compared to most areas in Utah the temperatures drop significantly to highs in the 50’s and lows in the 30’s. Zion does get most of its precipitation during this time but most areas don’t have significant snow totals. Some of the “off the beaten path hikes” or slot canyons may not be accessible due to impassible roads after a snow storm.
When to go
Zion National Park gets extremely crowded in the summer when children are out of school especially during school vacations. If you aren’t much for crowds it is best to visit in the spring or fall when temperatures are at its best and the canyon isn’t full of people.
During the summer months the visitor’s center parking lot fills up in the morning which then requires people to park on the street and take the Springdale shuttle to the visitor’s center entrance.