Black Hills in December

December Weather and Road Conditions

Those are the NOAA 1991-2020 normals for December at Rapid City Regional Airport. The average high is 10 degrees below November's 47.3°F, and snowfall rises from 5.7 to 6.7 inches. Precipitation is low, about a third of an inch for the month, so December in the Hills is cold and dry. Normals are monthly averages, so check the forecast for your actual dates. The table adds NOAA's Custer station, which sits 2,300 feet higher.

Source: NOAA NCEI 1991-2020 monthly normals, stations USW00024090 (Rapid City) and USC00392087 (Custer). Custer's average low is about 3 degrees warmer than Rapid City's in December. Month-by-month figures are on our Black Hills weather page.

Roads to check before you drive

• Needles Highway (SD-87): closes to vehicles with the first snow and does not reopen until April 1 or later. When conditions allow, SD Game, Fish and Parks says it is open to hikers, bikers, snowshoers and skiers. It passes Sylvan Lake, and Sylvan Lake Lodge is closed for the season.
• Iron Mountain Road (US-16A): “does close periodically during the winter,” per GFP, depending on how quickly crews can clear it safely. It is the link between Custer State Park and Mount Rushmore, so have a second route in mind.
• US-16A in Keystone: closed at the S.D. Highway 40 intersection since October 5, 2026, for a bridge replacement, and SDDOT plans to reopen it by April 23, 2027. A short signed detour loops through town with temporary signals, a 12-foot width limit and a 50-foot length limit, so check the project page first if you are towing or driving a large RV.
• Wildlife Loop Road: open year-round, with careful driving required in winter conditions. Custer Resorts lists US-16A and all other state highways as open all year, subject to closures in extreme conditions.
• Spearfish Canyon (US-14A) and Highway 385 to Wind Cave: we found no published winter closure policy for either. Wind Cave says snow can close park roads temporarily. Treat both as check-the-morning roads.
• Badlands Loop Road: the National Park Service warns that roads through the Badlands may close in winter and can be slick and icy.

Road status changes overnight, so open SD511 the morning you drive. Route details and tunnel sizes are in our Black Hills scenic drives guide.

Mount Rushmore hours in December

From November 1 to March 9 the parking structure and grounds are open 6:00 am to 9:00 pm, against 5:00 am to 11:00 pm from March 10 to September 30. There is no evening lighting program from October 1 to May 22. The sculpture is lit from sunset to 9:00 pm, which in December is late afternoon. Our Mount Rushmore tickets, hours and fees page has the parking price, and the worst time to visit Mount Rushmore and best time to visit Mount Rushmore guides cover how December compares with other months.

Jewel Cave: winter tickets go on sale in December

The NPS fees page says cave tours “will become available for the entire season at the beginning of December,” and the winter season runs through April. We found no exact 2026 release date, so check Recreation.gov in the first days of December. Booking closes at noon the day before, or earlier if the tour sells out, and Recreation.gov adds $1 per ticket. Scenic Tours cost $16 for adults and Discovery Tours $6. Jewel Cave is closed Sunday and Monday, so build a Tuesday-to-Saturday day around it. More on tour types is in our Jewel Cave guide.

Wind Cave

Wind Cave sells winter tours on Recreation.gov from 120 days ahead until two days before the tour. About half of each day's tickets are held for same-day sale at the visitor center, and those often sell out soon after it opens at 8:00 am. The park says tours sell out on holiday weekends throughout winter, so reserve ahead for the weekends around Christmas and New Year's. The cave stays 54°F year-round. See the Wind Cave guide for tour lengths.

What Is Closed in December

• Mount Rushmore evening lighting program and Sculptor's Studio. Both are closed for the season; the studio reopens May 23.
• Most Custer State Park lodging and food. Custer Resorts says Creekside Lodge is the only lodge that operates in winter; the others run May through October. Resort restaurants are closed, and no other stores, gas stations or restaurants in the park are open.
• Sunday Gulch Trail. Closed in winter because of ice. Every other park hike is open when conditions allow.
• Jewel Cave Historic Area, Lantern and Wild Caving tours. The Historic Area closed for the season in late September, and the two specialty tours return in summer.
• Cedar Pass Lodge in Badlands. The lodge lists its season as April 15 to October 15. The White River Visitor Center is typically closed from late September through Memorial Day.
• Many Keystone lodges. Several are seasonal, and our Keystone hotels guide lists the open dates we could confirm for each one.
• December 25 at the federal sites. The Jewel Cave, Wind Cave and Badlands visitor centers are closed, the Mount Rushmore buildings are closed, and the Custer State Park Visitor Center is closed. January 1 closes the Jewel Cave, Wind Cave and Badlands visitor centers.

Things to Do in the Black Hills in December

The December list is built around places with winter schedules: the memorials, two caves, the Custer State Park wildlife drive, and a short list of events. For a longer menu of attractions, the things to do in the Black Hills page covers the full year.

Drive the Wildlife Loop

The 18-mile Wildlife Loop Road in Custer State Park is open all winter, and Custer Resorts says the bison herd roams free year-round. GFP recommends early morning or the hour before sunset for animals. Buffalo Safari Jeep Tours, run by Custer Resorts, are the one resort activity operating in winter, with limited daily departures. The park entrance license is $25 per vehicle for seven days, per the GFP license page. Start at the Visitor Center, open 9:00 am to 4:00 pm. More on the park is in our Custer State Park guide.

Hike or snowshoe a park trail

Custer Resorts says every Custer State Park hike except Sunday Gulch stays open when conditions allow, with snowshoeing possible, though trails can close temporarily at higher elevations. The Winter Trail Challenge runs from Thanksgiving to April 1; pick up the flyer at the Visitor Center.

Ski Terry Peak

Terry Peak, 8 miles from Deadwood, is the Black Hills ski area: a 7,100-foot summit, 1,100 feet of vertical and 30 trails. Its season usually opens the first weekend in December, snow permitting, and lifts run 9:00 am to 4:00 pm. Lift prices, opening news and where to stay are in our Terry Peak ski guide.

See the memorials in winter light

Mount Rushmore is a short, free-entry stop with the grounds open until 9:00 pm. Crazy Horse Memorial is open daily and charges per vehicle: $30 for a car with three or more people from October 1 to May 14. Details are on our Crazy Horse Memorial page.

December events with confirmed 2026 dates

The Holiday Express dates and departure times are on the railroad's own schedule, which runs through January 2 and says it is subject to change. Book at 1880train.com or by calling (605) 574-2222.

Rapid City's Winter Market, tree lighting and Festival of Lights Parade fall on Saturday, November 28, before the month starts. The Main Street Square ice rink opens the same day and runs noon to 8:00 pm daily, at $10 a day pass plus $5 for skates. It closes when the temperature drops below 10°F, so check before you go. Custer's Christmas Parade (5:30 pm) and the Spearfish Holidazzle Parade (6:00 pm) are both on Saturday, December 5, and Deadwood lights its tree at Outlaw Square on December 4. Every date, time and source is in our Black Hills Christmas events guide. Deadwood's New Year's Eve listing still covers last year. If you plan around one of these, check the town's visitor site the week before. The Black Hills in November guide has the Thanksgiving-weekend events.

Where to Stay in the Black Hills in December

Pick the base by the day you care about most. For the memorials and Main Street Square, use Rapid City hotels. For the caves and the Wildlife Loop, use Custer hotels. For a casino weekend, use Deadwood hotels. Several Keystone lodges are closed for the winter, so check each one's dates first.

Inside Custer State Park, Creekside Lodge and a few cabins are the choices. The front desk keeps limited hours, management is on site around the clock, overnight stays include a continental breakfast, and the lodge sells limited snacks and firewood. Groceries are in Hermosa or Custer, per Custer Resorts. Compare park options in our Custer State Park lodging guide.

We did not find a sourced December rate comparison for the region, so we are not quoting one. Run your dates on Expedia before you commit. We earn a commission from qualifying bookings at no extra cost to you.

A 3-Day December Itinerary

The plan runs Tuesday through Thursday because Jewel Cave is closed Sunday and Monday. It avoids December 25 and January 1, when most visitor centers close. Treat the drive links as conditional: check SD511 each morning.