The Valley Visitor Center, located in Yosemite Valley is the largest and most comprehensive in terms of displays, books, postcards and maps. The Big Oak Flat Information Station, Wawona Information Station and Tuolumne Meadows Visitor Center are open on a more limited basis. See the Calendar Page for more information. Visitor Impacts To prevent congestion and overcrowding, automobile access may be temporarily restricted in Yosemite on spring weekends and busy holiday weekends such as Memorial Day, Fourth of July and Labor Day. Weather Weather can change rapidly during all seasons of the year.
Elevation plays a major role in temperature and precipitation.
Most of the moisture comes in the months of January, February and March, and the winter climate is relatively mild. Sierra summers are typically warm and dry. April and November are transitional months, when warm, sunny days can suddenly become stormy. Clouds can build up during the summer to produce spectacular thunderstorm activity. Always include some kind of rain gear.