Point of Interest

Pompeys Pillar National Monument overview

Montana, USA Upper Yellowstone watershed 45.995°, -108.006°
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Pompeys Pillar National Monument  -- Montana point of interest
Pompeys Pillar National Monument Montana · Upper Yellowstone watershed
About this spot

Pompeys Pillar National Monument

Pompeys Pillar National Monument is a unique geological formation in Montana that attracts visitors from around the world. The monument, which is located in the Upper Yellowstone-Pompeys Pillar watershed, is a 150-foot sandstone formation that rises from the surrounding landscape. The monument is named after Captain William Clark's scout, Sacagawea's son, Jean Baptiste Charbonneau, who was nicknamed "Pompey" by Clark. In 1806, Clark carved his signature into the sandstone, which is still visible today. The monument has been designated a national historic landmark and has been protected by the U.S. government since 1965.

Visitors can explore the monument's interpretive center and take a guided tour to learn about the area's history, geology, and ecology. They can also hike on the trails that lead to the top of the monument, offering stunning views of the surrounding landscape. In addition to the historical significance of Pompeys Pillar National Monument, visitors can also see a variety of wildlife, such as bald eagles, pronghorn antelopes, and mule deer. The monument is a great place for outdoor recreation, including fishing, camping, and birdwatching. Overall, Pompeys Pillar National Monument is a must-visit destination for anyone interested in history, geology, and nature.
StateMontana
WatershedUpper Yellowstone
Latitude45.9954°
Longitude-108.0057°
Detailed forecast

Plan your visit down to the hour

Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Around the spot

Plan a longer trip

The closest parks, campgrounds, fishing spots, and other landmarks so a quick visit can grow into a full day.

Responsible visitation & Leave No Trace

Know before you go
Check the operator's site (BLM, NPS, state agency, or private owner) for access rules, permits, and seasonal closures before driving out.
Stay on trail
Many points of interest sit in fragile ecosystems. Stick to marked paths to protect vegetation and prevent erosion.
Respect wildlife
Observe from a distance, never feed wildlife, and give nesting birds and denning mammals plenty of space.
Pack it in, pack it out
Take all trash, food scraps, and gear back with you. Remote sites often have no trash service.
Leave what you find
Don't take rocks, plants, fossils, or artifacts. Federal law protects cultural and natural resources on public land.

Set push alerts in the Snoflo app

Save Pompeys Pillar National Monument as a favorite, set a weather threshold (precipitation, freezing temperatures), and the iOS app will push the moment conditions cross.

FAQ

About Pompeys Pillar National Monument

What is Pompeys Pillar National Monument ?

A point of interest in Montana tracked by Snoflo -- typically a scenic landmark, named summit, monument, or viewpoint.

How fresh is the weather data?

The hourly forecast updates throughout the day from NOAA / yr.no public feeds.

When is the best time to visit?

Use the 15-day temperature & precipitation outlook on this page to pick a window with comfortable temperatures and low precipitation.

How do I get there?

Tap Directions in the hero above for Google Maps driving directions, or Open in map to center the Snoflo interactive map on the spot.

Can I get alerts when conditions change?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this POI, set a threshold (temperature, precipitation), and you'll get a push the moment it crosses.

More POIs

Other points of interest near here

Snoflo-tracked landmarks within driving distance of Pompeys Pillar National Monument .

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Manage alerts in the Snoflo app

Custom push alerts are configured in the iOS app -- favorite this POI, set a threshold (temperature, precipitation), and you'll get a push the moment it crosses.

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