National Monument · Wyoming
Fossil Butte National Monument
In the ridges of southwest Wyoming are some of the best-preserved fossils in the world. They tell the story of ancient life in a warm, wet environment in and around a freshwater lake. Stingrays swam in the lake. Turtles basked in the sun. Leaves rustled in the breeze while early horses darted between the trunks. We reveal more of the past with each fossil found.
Things to do
- Hiking
- Junior Ranger Program
- Wildlife Watching
- Birdwatching
- Museum Exhibits
- Shopping
- Bookstore and Park Store
Weather & when to go
Expect a variety of weather conditions no matter what time of year you visit. Spring, fall and winter can be very cold with snow and icy conditions. In spring, daytime temperatures usually range from 30 F to 65 F. Summer daytime temperatures range from 60 F to 90 F. Fall daytime temperatures range from 45 F to 70 F. Winter daytime temperatures range from -20 F to 30 F.
Operating hours
Fossil Butte National Monument
Visitors may enter the park any day sunrise to sunset, but visitor services and motor vehicle access vary throughout the year. Camping is not available.
FAQ
- Is Fossil Butte National Monument free to visit?
- Fossil Butte National Monument does not charge a standard entrance fee. Check the official NPS page for the latest details on any activity or permit fees before you go.
- What are the hours at Fossil Butte National Monument?
- Visitors may enter the park any day sunrise to sunset, but visitor services and motor vehicle access vary throughout the year. Camping is not available.
- Do I need a reservation for Fossil Butte National Monument?
- No timed-entry reservation is currently required to enter Fossil Butte National Monument. Campgrounds and permits may still need to be booked separately on Recreation.gov.