Crowd snapshot.
December averages about 49,000 recreation visits, roughly 7% of the July high, the lowest month on the five-year record. Nothing inside the park is open for lodging, camping or meals beyond a few gas pumps and the Headwaters convenience store at Flagg Ranch, which runs December through February. Every park visitor center is closed for winter, and the National Elk Refuge and Greater Yellowstone Visitor Center in Jackson is the one that stays open. Snowshoe with a Ranger does not begin until January, but reservations open by phone on December 1, so a holiday-week trip means booking ahead for a January return rather than a December walk.
| Field | Value |
|---|---|
| December recreation visits (5-yr mean) | 49,334 |
| Share of July's peak | 7% |
| Crowd band | lowest |
| Park's busiest month (5-yr mean) | July |
| Park's quietest month (5-yr mean) | December |
Weather snapshot.
The Moran 5WNW station records a December normal high of 24.1°F and a normal low of 4.0°F. Snowfall normals are 39.9 inches and precipitation 3.10 inches, the highest of any month at this station, just above January's 39.5 inches. January's high of 24.0°F edges December by a tenth of a degree, so the two months are effectively the coldest of the year together. Days are the shortest they get. NPS warns about hypothermia and frostbite setting in quickly and being hard to treat in the backcountry, and asks winter travelers to check the avalanche forecast and carry a beacon, probe and shovel in avalanche terrain.
| Field | Value |
|---|---|
| Average high (°F) | 24.1 |
| Average low (°F) | 4.0 |
| Precipitation (inches) | 3.10 |
| Snowfall (inches) | 39.9 |
| Weather band | harsh-cold |
| Station | Moran 5WNW HCN, WY at 6,805 ft |
Access snapshot.
The Teton Park Road is closed to cars from November 1 through April 30 and is groomed for skiing, snowshoeing and hiking from mid-December to mid-March (NPS Grand Teton roads page). Once it is snow covered, bikes are not allowed on it. The Moose-Wilson Road is closed to cars until mid-May and open to skiing, snowshoeing and hiking. US 89/191 and US 26/287 stay plowed from Jackson to Flagg Ranch, while secondary roads close seasonally. Grassy Lake Road is unplowed west of Flagg Ranch and opens to oversnow use once there is enough snow. Free overnight winter backcountry permits are issued by phone through the Permits Office, or through the Teton Interagency Dispatch Center on weekends and holidays (NPS Grand Teton winter page). For the closures and restrictions in force, read the current conditions page.
| Field | Value |
|---|---|
| December access score (0-100) | 55 |
| Year-round route | US 89/191 and US 26/287 through the east side of the park, plowed all winter from Jackson to Flagg Ranch. The Teton Park Road is closed to cars November 1 through April 30 from the Taggart Lake Trailhead to Signal Mountain Lodge, and the Moose-Wilson Road November 1 until mid-May. Secondary roads such as Antelope Flats and Schwabacher close seasonally based on conditions. |
| Verify current road and conditions status | Official NPS Grand Teton roads page |
Seasonal events.
December opens the winter recreation season once grooming starts mid-month. Besides the Teton Park Road, NPS names Colter Bay, Antelope Flats Road, Taggart Lake and Flagg Ranch as ski and snowshoe areas, plus the Moose-Wilson Road from the Granite Canyon end. Leashed pets get an unusual allowance in winter: normally restricted to plowed roads and lots, they may also use the unplowed Teton Park Road and Moose-Wilson Road. Wildlife has moved to its winter pattern, with elk heading south to the National Elk Refuge and bison to lower ground. Seasonal closures protect wintering animals, and NPS asks visitors to detour rather than push past a stressed moose or elk.
Audience verdict.
December is the deepest quiet of the year here, and the start of the ski season. It suits skiers and snowshoers once grooming begins, photographers who want the range under fresh snow and the shortest, lowest light of the year, and anyone content to drive the plowed highway and stop where they like. It is not a month for programs, since the ranger snowshoe walks start in January. Families should book those walks by phone from December 1 for a later trip. RV travelers and campers have no in-park option. Pack food and fuel from Jackson, and treat every road as icy.
Common questions.
Is December a good time to visit Grand Teton?
December runs very quiet at Grand Teton, about 7% of the July peak, with harsh winter cold (average highs near 24°F). If thinner crowds are the goal, it is one of the easier months to pick.
How crowded is Grand Teton in December?
December averages about 49,334 recreation visits, roughly 7% of Grand Teton's busiest month (July). That puts it among Grand Teton's quietest months.
How much of Grand Teton is open in December?
In a typical December, about 55% of Grand Teton's road network (weighted by how important each route is) is open to wheeled vehicles. Road-opening dates shift year to year, so check the official NPS page for current conditions before you go.
Methodology
Monthly recreation visits come from the official NPS Visitor Use Statistics Data Package, 2025 on NPS IRMA Stats; the statistic shown is Recreation Visits, the 5-year mean for 2021-2025. Climate normals come from NOAA NCEI's 1991-2020 U.S. Climate Normals at Moran 5WNW HCN, WY (station USC00486440, 6,805 ft elevation). The access score weights named park roads by route importance for typical wheeled-vehicle openings that month. Road dates, the Jenny Lake Boating season and lodge and campground windows move year to year. This page carries typical seasons and the year's published schedule, not today's status: for closures, construction and restrictions in force, read the NPS Grand Teton current conditions page and the road construction page, and confirm dates on the official NPS Grand Teton page before booking. Independent site, not affiliated with the National Park Service.
Independent site. Not affiliated with or endorsed by the National Park Service. Data comes from the official NPS Visitor Use Statistics Data Package, 2025; editorial analysis is ours. The NPS Arrowhead and other NPS marks are not used.