YOSEMITE PACKING CHECKLIST

Yosemite's climate varies enormously by elevation, not a single high-desert profile — the Valley floor runs hot and dry in summer and cool and wet in winter, while the high country is far colder and snow-bound much of the year. Pack plenty of water, sunscreen SPF 50+, a wide-brim hat, sunglasses, sturdy hiking boots, moisture-wicking layers, a packable rain jacket, trail snacks, and a headlamp. Add a Half Dome permit if you're going for the cables, and a bear canister for any overnight backcountry trip. Use the interactive checklist above to tailor the list to your season.

In summer, wear lightweight, light-colored, moisture-wicking clothing, a wide-brim hat, and polarized sunglasses, and carry electrolytes and at least a gallon of water per person per day for Valley hikes. The Valley floor gets hot, while the high country stays much cooler, so layer accordingly. Afternoon thunderstorms are common in the high country in summer — check the forecast before you head out, and avoid exposed granite domes and ridgelines during storms.

Yes — a hard-sided bear canister is required for any overnight backcountry or wilderness trip in Yosemite. If you don't own one, they're rentable at visitor centers for about $5 per trip.

Winter visits call for warm insulated layers, a hat and gloves, waterproof boots, and microspikes for icy trail sections. Add hand and toe warmers and trekking poles for stability, and note that Tioga Road and Glacier Point Road close for the season (typically November through late May, depending on snowpack) — check road status and carry tire chains if you're driving up.