If a visit to the Grand Canyon National Park is on your summer schedule, I recommend heading to the canyon’s North Rim rather than the better-known and thus more crowded South Rim. The North Rim affords classic views just as stunning as those visible from the South Rim but you get to enjoy them in cooler weather. Summer daytime high temperatures on the North Rim average in the 70s. And nighttime lows drop to the 40s, making good sleeping weather for campers.