Zion National Park’s seasonal variations make visiting at any time of year a special experience. Zion Canyon's large cottonwood trees turn spectacular shades of yellow, gold, and orange in fall. Snowstorms blanket the park a couple of times each winter; snow and ice can linger at the higher elevations. Spring yields wildflowers and blooming cacti. Summer is monsoon season, with (sometimes violent) afternoon thunderstorms common. Walking around Zion Canyon in the rain, you'll see some of the park’s most magical sights: waterfalls everywhere! Make sure to avoid high areas and other places exposed to lightning, as well as narrow canyons, which can become instantly flooded with water.