International Information Discover America

Home > Trip Planner > Travel Tips

Trip Planner

South Dakota Travel Tips

Getting Here

Several airlines offer service to South Dakota cities, including Sioux Falls, Rapid City, Aberdeen, Huron, Pierre and Watertown. Contact your travel agent for specific flight information.

Two interstate highways cross the state. I-90 runs east-west and I-29 runs north-south. The speed limit on interstate highways is 75 mph. On most other highways, it's 65 mph.

Getting Information

South Dakota Tourism maintains Information Centers at rest areas along interstate highways. You can pick up travel information and visit with travel counselors at the Information Centers from mid-May to early September. Of the 13 centers, 11 are open seven days a week, and the two Tilford centers are open Thursday through Monday. Daily hours are 8 a.m.-5 p.m. Rest rooms, drinking water, telephones, picnic facilities, pet exercise areas and sanitary disposal dumps are available year-round.

Travel CDs supply information about South Dakota history, sites and attractions. The CDs can be purchased at any Information Center (mid-May through mid-September).

Wireless Internet Access

While traveling in South Dakota, you can research your South Dakota destinations, keep in touch with family and friends, or make lodging reservations using the Internet by way of numerous wireless access locations across the state.

The following communities are part of the SDN Communications network offering access on a daily, weekly or monthly basis:

Sioux Falls

SDN Communications plans to add other sites throughout the summer, especially along Interstates 90 and 29. Visit for more information or call 1-877-444-2468.

NOTE: More wireless services are available in South Dakota. Any use of the names of private companies is for informational purposes only and does not imply endorsement by South Dakota Tourism.

Getting Around

South Dakota observes both Central and Mountain times. The dividing line runs north-south roughly down the center of the state. Daylight-saving time is observed from the first Sunday in April to the last Sunday in October.

Car rental companies are located at most major airports or within the city limits. Some local auto dealers also offer rental services.

Interactive information kiosks allow you to view information about South Dakota road construction, road conditions, and weather forecasts. For maps pinpointing highway construction areas, call 605-773-3571. For reports on winter road conditions, call 511.

In the Black Hills region, there are several narrow tunnels you should be aware of, particularly if you're driving a recreational vehicle, camper, truck or bus. The tunnels are listed below.

Black Hills Tunnels
US 16A 6 mi. SE of Keystone 13'4" 12'4"
US 16A 4 mi. SE of Keystone 13'2" 12'2"
US 16A 3 mi. SE of Keystone 14'0" 12'9"
US 16A 1 mi. N of Keystone 47'0" 18'0"
SD 87 6 mi. SE of Sylvan Lake 9'0" 12'3"
SD 87 2 mi. SE of Sylvan Lake 8'4" 12'0"
SD 87 1 mi. N of Sylvan Lake 10'6" 10'7"


In general, here's what you can expect from South Dakota's four seasons:

Summer (mid-June - mid-September)
Warm (sometimes hot) days and cool nights are the norm from mid-June through mid-September.

Fall (mid-September - November)
Comfortable warm weather through September and crisp cool weather into November make fall an excellent time to explore South Dakota.

Winter (December - early March)
While temperatures can be cold, cold spells usually alternate with milder weather. Snowfall is prevalent-providing excellent conditions for winter sports.

Spring (late March - mid-June)
Mostly sunny days, but this can be the rainy season. Spring snow showers are a possibility through early May. Temperatures can range from the 40s (4C) to the 80s (27C).