Twin Sisters Mountain
About
Twin Sisters Mountain is a summit of 11,421 feet in the Canyon Lakes Ranger District of the Arapaho and Roosevelt National Forests in Colorado, about 4 miles from the town of Allenspark. Summer is the most comfortable time to go. Typical averages from a nearby weather station show July highs around 68°F with lows near 43°F, and September highs near 59°F. That station sits well below the summit, so temperatures up top run cooler. The Twin Sisters Peaks hike starts just 0.6 miles away, and the Wizard's Gate climbing area is about a mile off. The Wind River Pass Trail is roughly 1.6 miles away, and Rocky Mountain National Park Glacier Basin Campground is about 4.9 miles away.
Summit Facts
Summit elevation
11,421 ft
Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).
Location
Twin Sisters Mountain
Colorado
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–Aug. The mildest months here, with typical highs of 62–68°F and lows of 36–43°F.
Typical monthly averages (not a forecast) from the Boulder 14 W, CO weather station, 18 mi away. High / low in °F.
- Jan29° high12° low
- Feb28° high11° low
- Mar36° high17° low
- Apr40° high22° low
- May50° high29° low
- Jun62° high36° low
- Jul68° high43° low
- Aug66° high41° low
- Sep59° high34° low
- Oct47° high26° low
- Nov35° high19° low
- Dec28° high12° low
The station sits about 1,600 ft lower than this spot, so expect it to run cooler up here.
Where it is
- Canyon Lakes Ranger District · Ranger district
- Arapaho and Roosevelt National Forests · National forest
- Nearest town
- Allenspark, Colorado · 4 mi
Conditions
Active alerts for Canyon Lakes Ranger District as of Oct 9, 2026:
Cameron Peak Fire Road Closures
caution · posted Aug 24, 2026
West Crystal A - Mechanical Fuelbreak Area and Road Closure
caution · posted Aug 24, 2026
Source: USFS forest alerts
Nearby
- Twin Sisters PeaksHiking0.6 mi
- Wizard's GateRock climbing1 mi
- Lower Great FaceRock climbing1.1 mi
- Wind River Pass TrailHiking1.6 mi
- Meeker Park Overflow CampgroundCamping3.3 mi
- Rocky Mountain National Park Glacier Basin CampgroundCamping4.9 mi
- Glacier CreekCanoeing5.6 mi
- North Saint Vrain CreekCanoeing6.2 mi
Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)
