Many people assume that once Memorial arrives Yosemite Valley will be overrun with tourists until after Labor Day. Sure, summer is the most crowded season in Yosemite. But there’s a little window between Memorial and the middle of June, the date most kids get out of school, when the valley is still relatively quiet. It’s actually a great time of year in the park. The roads to Tioga Pass and Glacier Point are usually open (as they are now), the waterfalls are still full—in fact often at their peak in early June—and the valley wildflowers are most abundant. The accompanying photo shows Cook’s Meadow with blooming cow parsnip in early June.