The bright colors found in Grand Prismatic Spring come from thermophiles—microorganisms that thrive in hot temperatures
Photo: NPS/Jim Peaco
About
On March 1, 1872, Yellowstone became the first national park for all to enjoy the unique hydrothermal wonders. Today, millions of people come here each year to camp, hike, and enjoy the majesty of the park.
Location
2 Officers Row
Yellowstone National Park Headquarters
Yellowstone National Park, WY 82190
Entrance Fees
Entrance - Private Vehicle$35.00
Entrance - Non-commercial Groups$20.00
Entrance - Motorcycle$30.00
Entrance - Snowmobile$30.00
Hours
wednesdayAll Day
mondayAll Day
thursdayAll Day
Activities
Arts and CultureAuto and ATVScenic DrivingAstronomyBikingMountain BikingRoad BikingBoatingBoat TourCampingBackcountry CampingCanoe or Kayak CampingCar or Front Country CampingHorse Camping (see also Horse/Stock Use)Group CampingRV CampingFishing
Directions
Yellowstone National Park covers nearly 3,500 square miles in the northwest corner of Wyoming (3% of the park is in Montana and 1% is in Idaho). Yellowstone has five entrance stations, and several are closed to regular vehicles during winter. It takes many hours to drive between these entrances, so be sure to check the status of roads at the entrance you intend to use while planning your trip and before you arrive.
Get directions →Weather
Yellowstone's weather can vary quite a bit, even in a single day. In the summer, daytime highs can exceed 70°F (21°C), only to drop 20 or more degrees when a thunderstorm rolls through. It can snow during any month of the year, and winter lows frequently drop below 0°F (-18°C), especially at night. Bring a range of clothing options, including a warm jacket and rain gear, even in the summer.