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Winter in Grand Teton: Early-Season Conditions and How to Visit Safely

An early-winter visit to Grand Teton National Park is far different from a summer one: services are extremely limited, weather can change within hours from sunny to snowy, and the roads and trails are often icy. The park service posted this guide while it waited for enough snow to begin grooming the Teton Park Road for activities such as cross-country skiing.

The grooming wait

When the post was written, not enough snow had fallen to begin grooming. The park was monitoring conditions in partnership with Grand Teton National Park Foundation and promised updates once there was enough. Grooming is paid for by the foundation and by a Federal Highway Administration Recreational Trails Program grant managed by the State of Wyoming.

A graphic of falling snow on a snowy Grand Teton mountain, shown as a loading screen

NPS animation.

Come prepared

Limited services and seasonal road and wildlife closures make a winter visit far different from a summer one. The park advises warm, waterproof layers, food, water and extra clothing, and a check of weather and park conditions at go.nps.gov/tetonconditions before heading out.

Driving

  • Slow down so you do not lose control on slick, icy roads.
  • Keep a large following distance from other vehicles, and give snowplows plenty of space.
  • Migrating elk are common along park roads at this time of year. Stay vigilant, keep speeds slower and follow posted limits.
  • Check road status at go.nps.gov/tetonroads.

Icy road with a stopped vehicle and two moose in the road

Image from the National Park Service's page.

Wildlife

Bighorn sheep and other animals survive brutal winter conditions, and the park says stress from human disturbance, including skiing and snowboarding, can push these animals toward starvation. To protect them:

  • Observe all seasonal and temporary wildlife closures.
  • Avoid bighorn sheep winter zones.
  • Keep at least 100 yards from bears and wolves and 25 yards from all other wildlife.

Closure details are at go.nps.gov/tetonclosures, and the Teton Range bighorn sheep winter zones and closure map is at tetonsheep.org.

Bighorn sheep standing in the snow

Image from the National Park Service's page.

On the trail

Road and trail conditions vary across the park, and many trails are covered in icy snow. As trails pack down and steeper sections turn slick, the park suggests ice grips, traction devices or crampons, whichever keeps you upright, and ski or hiking poles for tricky terrain. Deep, fresh snow later in the winter calls for snowshoes or skis to stay on top of it. Conditions can change between meadows, shady forests and well-traveled trails, so know the conditions and be ready to turn around.

In the backcountry, the park puts it bluntly: fresh powder turns are not worth your life. Use careful snowpack assessment and good terrain choices, and always check the avalanche center's site, bridgertetonavalanchecenter.org, first.

Leave No Trace

Dispose of trash and pet waste properly and follow the Leave No Trace principles by packing out what you bring in.

The Teton Range covered in snow

Image from the National Park Service's page.

Sources