YELLOWSTONE PACKING CHECKLIST

Pack for a high-elevation climate with big seasonal and day-to-night swings: layers, sunscreen SPF 50+, a wide-brim hat, sunglasses, sturdy hiking boots, a packable rain jacket, trail snacks, and bear spray carried where you can reach it. Add any required permits (backcountry camping, fishing) and always stay on marked boardwalks near thermal features. Use the interactive checklist above to tailor the list to your season.

In summer, layer up — mornings and evenings stay cool even in July and August, and afternoon thunderstorms are common in the high country. Wear closed-toe shoes for boardwalk sections, carry sun protection, and keep bear spray accessible on any trail.

Yes, strongly recommended for any hiking or backcountry travel — Yellowstone has an active grizzly and black bear population. Carry it somewhere you can access it in seconds (a hip holster, not buried in your pack) and know how to use it before you go.

Winter visits require heavy insulated layers, a hat, gloves, a balaclava or face protection, and insulated waterproof boots. Since most interior roads close to regular vehicles, you'll also need to book a guided snowcoach or snowmobile tour well in advance to see the park's interior at all.