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Summit

Penrose Peak

Montana

About

Penrose Peak is a summit of 7,231 feet in the Plains/Thompson Falls Ranger District of Lolo National Forest in western Montana. The nearest town is Weeksville, about 8 miles away. Summer is the most comfortable time to go. Typical averages from a nearby weather station at Mullan Pass show July and August highs around 70°F with only about six wet days a month, while winter highs stay near 28°F. Several other hikes start close by. Acorn Lake is about 1.4 miles away and Dee Creek about 1.7 miles. Sacajawea Peak lies roughly 3.3 miles off, and Cabin City Campground is about 8 miles away for an overnight base.

Summit Facts

Summit elevation

7,231 ft

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

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Location

Penrose Peak

Montana

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: Jul–Aug. The mildest months here, with typical highs of 69–70°F and lows of 51–52°F.

Typical monthly averages (not a forecast) from the Mullan Pass Vor/Dme, ID weather station, 23 mi away. High / low in °F.

  1. Jan28° high19° low
  2. Feb28° high19° low
  3. Mar34° high22° low
  4. Apr40° high27° low
  5. May50° high36° low
  6. Jun58° high42° low
  7. Jul70° high52° low
  8. Aug69° high51° low
  9. Sep59° high44° low
  10. Oct44° high32° low
  11. Nov32° high23° low
  12. Dec27° high18° low

The station sits about 1,200 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
Weeksville, Montana · 7.9 mi

Source: USFS EDW boundaries; USGS GNIS populated places

Conditions

Active alerts for Lolo National Forest as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

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

    Penrose Peak — Summit in Montana | Roamze