Weather in the Eastern Sierra is unpredictable. Expect cool/warm days and cold mornings and evenings.
Due to variable conditions, I recommend bringing multiple layers of non-cotton clothing, like Merino wool, fleece, or synthetic fibers. Specifically you should bring:
Although we hope for clear skies, clouds can appear at any moment. There is a reason the PhotoPills motto is “Plan and Pray.” Or, as I always say: keep your expectations low and your hopes high.