What to pack for Yellowstone in January

Lows around 9°F. Goes under the shell when the wind picks up.

Highs below freezing. A puffy alone won't do it.

Wear one, dry one. Cotton stays wet all week here.

Lows of 9°F freeze exposed skin in minutes.

Wind at 17 km/h makes bare hands painful within an hour.

New boots plus deep snow and 21°F highs means blisters turn to frostbite.

Snow reflects UV rays even when the index is low.

Insects are dormant, but this stays in your pack for lower elevations.

Check ankles and, if there's a dog, paws and ears every night.

Altitude sickness hits some people at 2479 meters.

Daylight lasts 9.2 hours and cold drains batteries fast.

Dark by 6:05pm. Every campsite chore after that is a two-hands job.

Overhead bins are tight on regional flights to Yellowstone.

Day hikes from lodges need separate packs for gear.

Fits the overhead on every airline that matters. Skip the checked-bag line entirely.

For the passport, the chargers, and the one dry pair of socks.

Regular gloves soak through in snow within an hour.

For the mornings and the nights.

Breath freezes on fabric and ice builds up around your mouth.

Snow and altitude combine to make wet feet a fast path to hypothermia.

Treat the clothes once and it lasts weeks.

Snow melts into water; tap water is safe here.

One brick charges the laptop, phone, and camera.

Crowded lodges mean easy bag mix-ups.

Bulky winter clothes need checked space.

Layering systems take up room without organization.

Heavy insulated gear fills suitcases fast.

Humidity at 79% makes damp clothes smell after two days.

Lows around 9°F. One blanket that packs small covers the car, the campsite and the beach at sunset.

Snow hides rocks and uneven ground on mountain trails.

Snow creeps into boot tops on steep terrain.

Altitude and snow reflection burn lips faster than you notice.

Mountain roads wind and snow makes the drive longer.

Cabins and lodges are shared spaces with limited cleaning.

Cold air dries skin and cracks become infected easily.

Cold shortens battery life, so charge frequently.

Shared storage at guesthouses makes locks necessary.

Thick jackets compress poorly without them.

Bathroom humidity fogs mirrors and breeds mold.

Pockets aren't enough when temperatures drop below 14°F.