Yosemite is a year-round destination in the Sierra Nevada mountains. This national park in usually-sunny California shuts some roads
and makes portions of the park inaccessible except by ski or snowshoe, but that opens it up for winter activities.
The park's elevations range from 2,000 to 13,000 feet, affecting the weather. The park's weather also changes greatly.
Yosemite Valley, where most visitors stay, has dry, warm summers, chilly autumns and springs with considerable precipitation, and cold, snowy winters.
Tuolumne Meadows (when Tioga Road is accessible) is cooler than Yosemite Valley. It's 18-20 degrees cooler here. Tuolumne Meadows is 72 and 70 degrees when Yosemite Valley is 89.
May. Yosemite's waterfalls are beautiful as the snow melts. Wildflowers are thriving after a rainstorm. The Merced River Canyon's flowers bloom in March, although not in abundance until mid-May.
Temperatures average 45 to 71 degrees. Some schools are still in session, so you'll have the park to yourself before the summer crowds arrive.
According to data gathered 1991-2020, July and August are the hottest months, with an average high temperature of 89 degrees. September’s next at 83 degrees, then June at 81.
Expect a thick snow covering for most of the park from November through May.
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