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Summit

Observation Peak

Wyoming

About

Observation Peak is a summit of 9,402 feet in Yellowstone National Park in Wyoming, about 16 miles from the town of Mammoth. Summer is the most comfortable time to go. Typical averages from the nearby Lake Yellowstone weather station show July and August highs around 71°F with lows in the low 40s, and the peak sits higher than that station, so expect it to run a little cooler. The Observation Peak Trail starts about 3 miles away, and the Cascade Lake Trail and Cascade Creek Trail are close by as well. For a different outing, the Gibbon River offers canoeing about 8 miles off.

Summit Facts

Summit elevation

9,402 ft

Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).

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Location

Observation Peak

Wyoming

Name and location: U.S. Geological Survey, Geographic Names Information System (GNIS). Elevation: USGS 3D Elevation Program. View the GNIS record.

Facts about this place

When to go

Best time to go: Jun–Sep. The mildest months here, with typical highs of 61–71°F and lows of 34–43°F.

Typical monthly averages (not a forecast) from the Lake Yellowstone, WY weather station, 16 mi away. High / low in °F.

  1. Jan23° high3° low
  2. Feb27° high3° low
  3. Mar35° high11° low
  4. Apr42° high19° low
  5. May50° high29° low
  6. Jun61° high36° low
  7. Jul71° high43° low
  8. Aug71° high42° low
  9. Sep61° high34° low
  10. Oct46° high25° low
  11. Nov33° high15° low
  12. Dec24° high7° low

The station sits about 1,500 ft lower than this spot, so expect it to run cooler up here.

Source: NOAA NCEI U.S. Climate Normals 1991–2020

Where it is

Nearest town
Mammoth, Wyoming · 16 mi

Source: NPS Land Resources boundaries; USGS GNIS populated places

Conditions

Active alerts for Yellowstone National Park as of Oct 9, 2026:

Source: NPS Alerts API

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

    Observation Peak — Summit in Wyoming | Roamze