Glacier Col
Peak · 11,584 ft · Yosemite corridor
Glacier Col is an 11,584-foot pass in the Yosemite corridor of California's high Sierra. A windswept alpine saddle between Cathedral Range peaks, it sits exposed to westerly funneling and afternoon thermals.
Wind dominates this col. The 30-day average wind of 16 mph routinely climbs into the 30s by mid-afternoon as solar heating triggers upslope flow from the lake basins below. Morning hours are noticeably calmer. Exposure is complete; shelter is zero.
The last month averaged a NoGo Score of 33 with a 30-day average wind of 16 mph and temperature of 21 degrees Fahrenheit. Late April and early May show erratic snowpack stability and variable afternoon wind regimes; the week ahead will test both. Head early or plan for high-wind afternoons.
30 days back / 7 days forward
Today's score by factor
About Glacier Col
Glacier Col marks the low point between Cathedral Peak to the northwest and a secondary crest to the southeast. It sits on the high-Sierra crest approximately 20 miles northeast of Yosemite Valley, accessible via High Sierra Camps loop trails or via backcountry approach from Tenaya Lake. The pass sits in the rain shadow of the Sierra crest and drains to both the Tenaya Lake watershed on the western slope and the Mono Basin on the east. Highway 120 (Tioga Road) provides the nearest vehicle access; it typically opens in late spring and remains subject to early-season closures due to snow.
Winter and spring at Glacier Col are avalanche terrain. Snowpack instability is the rule from January through April; consult SAC avalanche forecasts before any approach across steep gullies or convex slopes near the col. Summer exposure flips the hazard profile. The 30-day average temperature is 21 degrees Fahrenheit and average wind is 16 mph, but wind gusts reach 42 mph routinely in the rolling 30-day window. Afternoon wind is predictable; morning calm is fleeting. Crowding averages 3 on a 10-point scale, reflecting low baseline popularity and mid-week traffic that peaks on weekends after Highway 120 opens fully.
Glacier Col suits experienced high-altitude hikers and climbers comfortable with exposed terrain, route-finding on talus, and self-rescue. Recreational day-hikers from the High Sierra Camps loop treat the col as a transit point, not a destination. Parties planning to camp or climb the adjacent peaks must account for wind exposure, lack of water, and the rapid onset of afternoon thermals. Snowshoes and ice axes are mandatory in spring. In summer, the col offers wind-shadow spots on the eastern lip; west-facing slopes remain scoured and inhospitable.
Cathedral Peak lies immediately northwest and is a scramble-accessible summit popular with backcountry climbers. Tenaya Lake, 6 to 8 miles southwest via High Sierra Camps, offers calmer wind conditions and year-round water. The col's isolation and exposure make it a competency checkpoint; parties that turn back here in high wind or poor conditions have made the right call. Nearby peaks like Eichorn and Echo function similarly but carry different approach hazards and crowd profiles.