Summers in Utah can be quite hot due to the state's arid, desert-like climate, however, you're unlikely to experience much humidity considering the state is one of the country's driest.
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Utah weather in June is very hot and sunny, making it one of the best times of the year to visit. You should pack light clothes for your stay and you can leave your raincoat behind as it's not likely to rain much in June. Utah has a beautiful landscape filled with mountains, vast national parks and winding rivers.
Hiking in Utah in AugustIn August you'll want to limit your hiking to the cooler mornings and evenings and avoid the hot daytime temperatures. There are plenty of trails that offer a variety of different terrains all around the state at National parks, State parks, National forests, and Wilderness areas.
The weather from June through September is usually 45 to 80 degrees Fahrenheit. With Bryce Canyon being at a higher elevation of 8,000 to 9,000 feet, the nights cool down quite a bit. July is the hottest month of the summer with temperatures sometimes reaching into the 90s.
June is the hottest month in the Grand Canyon and is difficult for backpacking and longer treks. This is due to the intense heat in the canyon that makes even day hiking dangerous at times.
August is typically very hot in Zion National Park. The average temperature for Zion Canyon in August is a high of 97 and a low of 66 degrees Fahrenheit (36/19 degrees Celsius). In Kolob Canyons, the average temperature is a high of 87 and a low of 57 degrees Fahrenheit (30/13 degrees Celsius).
WEATHER IN augustAugust in Bryce Canyon is typically very pleasant with the exception of possible afternoon thunderstorms. The average high is 77 and the average low is 50 degrees Fahrenheit (25/10 degrees Celsius).
Recreation in, and around, the lakeThe best place to swim or float in the lake is at Antelope Island State Park, where white oolitic sand beaches provide easy access to the lake without the brine flies that are prevalent on other areas of the shoreline. The beach area also has showers to rinse off the salty water.
The summer months in Zion tend to be the busiest and hottest months of the year. In the summer, May through September, temps can reach up to 110 degrees in the heat of the day.
One of the important differences between Bryce Canyon and Zion is that Bryce is at significantly higher elevation than Zion. In fact, Bryce has areas that are as much as 5,000 feet higher in elevation than Zion. This means that Bryce is significantly colder—and snowier—than Zion for a significant portion of the year.
Summer is the peak tourist season in Utah's national parks, particularly in popular parks like Zion and Arches. The weather is hot, with temperatures often exceeding 90°F (32°C) during the day. However, summer offers longer daylight hours, which means more time to explore.