Coastal and high-elevation reprieves from skyrocketing mercury aside, these parks also offer nearly every imaginable outdoor activity, including hiking, backpacking, fishing, and surfing. You may even spot some grizzly bears, gray whales, and wood frogs that freeze solid during the long winter only to jump back to life in spring.
Photo Caption: The beach at Point Reyes National Seashore
Photo by California Travel and Tourism Commission/Christian Heeb