One park, full focus — Half Dome permit pending, otherwise the classic Valley loop. Early April in Yosemite Valley runs cool and wet: daytime highs upper 50s to low 60s°F, overnight lows near freezing, meaningful chance of rain or mixed rain/snow. This is peak waterfall season with Vernal and Yosemite Falls near full spring flow, but high-country access is closed — Tioga Road and Glacier Point Road are almost always still snowed-in until mid/late May, so Half Dome and Tuolumne Meadows are off the table this trip.
One park, full focus — Half Dome permit pending, otherwise the classic Valley loop. Early April in Yosemite Valley runs cool and wet: daytime highs upper 50s to low 60s°F, overnight lows near freezing, meaningful chance of rain or mixed rain/snow. This is peak waterfall season with Vernal and Yosemite Falls near full spring flow, but high-country access is closed — Tioga Road and Glacier Point Road are almost always still snowed-in until mid/late May, so Half Dome and Tuolumne Meadows are off the table this trip.