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A green valley with a ridgeline across the way with a tan top not covered with vegetation.

← Wyoming guide · National Monument

A different kind of time travel.

Fossil Butte · A day that begins with one good stop.

See your first day
Photo: NPS Photo · NPS source ↗
04 / WYOMING

Why this place matters

Fossil Butte

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.

Read the full NPS story ↗
The moon over a snow-covered butte
Photo: NPS Photo · NPS source ↗

A flexible first day

Start here. See where it takes you.

These are ways to explore, not a timed itinerary. Check conditions before you set out.

01 · ARRIVE

Start with the visitor center fossils and landscape view.

02 · GO DEEPER

Use an open trail or scenic drive to see the ancient lake country.

03 · BEFORE YOU GO

Check seasonal facilities and road conditions.

Check current Fossil Butte access with the National Park Service ↗

Find your bearings

Explore nearby chapters.

Switch stops to see where this chapter sits in the wider state.

Yellowstone1Grand Teton2Devils Tower3Fossil Butte4Cheyenne: 62.9 inches average annual snowfall1Yellowstone Mammoth: 71.5 inches average annual snowfall2

Outline: U.S. Census Bureau, 2023 cartographic boundary files. Points show guide starting areas and NOAA stations.

Snow markers compare station normals only. They are not a statewide snow cover or forecast map.

NOAA 1991–2020 · monthly normals

A little weather context.

These stations show two parts of the state; neither is a forecast or necessarily local to this site.

Yellowstone Mammoth · average temperatureMonthly mean °F
NOAA station data ↗
Show all 12 monthly values
Yellowstone Mammoth · monthly mean temperature (°F)
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Value21.723.330.53847.155.864.663.153.941.329.321.1

Normal = 1991–2020 average at the named NOAA station. Snowfall is new snow over a month, not snow currently on the ground. A blank NOAA snow series is shown as unavailable, never as zero. See current NOAA snow depth ↗

Weather changes the trip

Let the season shape the day.

Check seasonal facilities and road conditions. The graph above uses a named NOAA station; conditions at this place may differ with elevation and weather. Check the local NWS forecast ↗

Keep exploring Wyoming

Where next?

YellowstoneLet the geyser set the schedule.Explore →Grand TetonLeave an extra hour for the reflection.Explore →Devils TowerLook closer than the silhouette.Explore →

Use Jackson, Cody, or a smaller gateway town for a distinct local meal and an unhurried evening. See current events ↗

Make the trip yours

Build around what you want to remember.

Tell WTDO your dates, where you start and how you travel. The first plan is free.

Plan this trip free