Yosemite National Park receives most of its precipitation in the months of January, February, and March. In the higher regions such as Glacier Point and along the Tioga Road, this falls as heavy snow. Summers are typically warm and dry, but do produce frequent afternoon thunderstorms. Spring and fall have erratic weather, with warm and sunny days sometimes giving way to storms and cool weather. Clouds can build up during the summer to produce spectacular thunderstorm activity. The statistics below are from the Yosemite Valley area of the park. The high country along the Tioga Road, including Tuolumne Meadows, are 10-20°F cooler.
