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Fossil Butte National Monument: fees, hours, camping and when to visit

Updated October 30, 2026. Based on National Park Service data. Published by Humblebee.

Entrance fee
None[1]
Busiest month (2025)
July[2]
Recreation visits, 2025
20,626[3]
Visitor centers
1[4]

Fossil Butte National Monument is a National Park System unit in Wyoming[5]. NPS lists it as a fee-free park, so there is no entrance fee[1].

Entrance fees and passes

The National Park Service lists no entrance fee for Fossil Butte National Monument[1]. Some tours, campgrounds or permits inside a park can still have their own fees.

When to visit and hours

Visitors may enter any day from sunrise to sunset, though visitor services and car access change during the year[6]. In 2025 the busiest month was July with 4,640 recreation visits, and the quietest was January with 97[2]. NPS says to expect a variety of weather in any season[7]. Snow and ice are possible in spring, fall and winter, when it can feel very cold[7]. Summer days run from 60 F to 90 F[7]. Winter days run from -20 F to 30 F[7].

January 2025: 97 recreation visitsJanFebruary 2025: 132 recreation visitsFebMarch 2025: 351 recreation visitsMarApril 2025: 672 recreation visitsAprMay 2025: 2,682 recreation visitsMayJune 2025: 4,546 recreation visitsJunJuly 2025: 4,640 recreation visits4,640JulAugust 2025: 3,513 recreation visitsAugSeptember 2025: 3,193 recreation visitsSepOctober 2025: 450 recreation visitsOctNovember 2025: 171 recreation visitsNovDecember 2025: 179 recreation visitsDec
Recreation visits counted by the National Park Service in each month of 2025. The busiest month, July, is highlighted[2].
Show visits by month
Month, 2025Recreation visits
January97
February132
March351
April672
May2,682
June4,546
July4,640
August3,513
September3,193
October450
November171
December179
Show visits by year
Year Recreation visits
2021[3] 21,153
2022[3] 17,879
2023[3] 19,377
2024[3] 21,491
2025[3] 20,626

Pets and dogs

Under the national NPS pet rule, pets must be crated, caged or on a leash no longer than six feet where they are allowed[8]. Pets are not allowed in public buildings, with service animals excepted[8]. NPS lists pets as permitted on 3 of the 7 things to do here, including the Fossil Butte Scenic Drive and the Historic Quarry Trail[9]. The park can close more areas to pets[8].

Before you go

Questions people ask

Is there an entrance fee at Fossil Butte National Monument?
No. NPS lists it as a fee-free park with no entrance fee[1]. Confirm on the official park page before a trip.
When is the best time to visit?
In 2025 the busiest month was July with 4,640 recreation visits and the quietest was January with 97[2]. Summer days run from 60 F to 90 F[7].
Can you camp at Fossil Butte National Monument?
No. The NPS hours note says camping is not available[6].
Are dogs allowed?
Pets must be on a leash no longer than six feet where allowed[8]. NPS lists pets as permitted on 3 of 7 things to do, including the Historic Quarry Trail[9].
What are the park hours?
Visitors may enter any day from sunrise to sunset, though visitor services and car access change during the year[6].

Facts and sources

  1. NPS lists Fossil Butte National Monument as a fee-free park: there is no entrance fee. National Park Service
  2. NPS recreation visits by month, 2025 (chart on this page). NPS Visitor Use Statistics
  3. NPS recreation visits per year: 2021: 21,153, 2022: 17,879, 2023: 19,377, 2024: 21,491, 2025: 20,626. NPS Visitor Use Statistics
  4. Visitor centers listed by NPS: 1 (Fossil Butte Visitor Center). National Park Service
  5. Fossil Butte National Monument is a unit of the U.S. National Park System (designation: National Monument) in Wyoming. National Park Service
  6. 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. National Park Service
  7. NPS weather and seasons overview for Fossil Butte National Monument. National Park Service
  8. National Park Service rule 36 CFR 2.15: where pets are allowed they must be crated, caged or on a leash no longer than six feet at all times, and pets are not allowed in public buildings, on public transportation or on designated swimming beaches (service... eCFR, 36 CFR 2.15
  9. NPS lists 7 things to do at Fossil Butte National Monument: Eagle Nest Point Trail, Cundick Ridge Trail, Rubey Point Trail, Fossil Butte Visitor Center Exhibits, Fossil Butte Scenic Drive, Historic Quarry Trail, Ranger Programs at Fossil Butte. Pets... National Park Service

Fees and hours are what NPS lists in its data at the snapshot date. They change: tell readers to confirm on the official park page before a trip. Visits are NPS recreation visits (counted entries, not unique people). Use them only for this park's own months and years, never to rank parks. Campground list and site counts come from NPS and Recreation.gov records. Count fields can differ slightly between the two. The pet rule is the national baseline (36 CFR 2.15). The park may close more areas to pets. Do not claim specific trails allow dogs unless a fact says so.