Conness Pass
Peak · 11,187 ft · Yosemite corridor
Conness Pass is an 11,187-foot alpine crossing in the Yosemite corridor of the Sierra Nevada. This high ridge sits exposed to afternoon wind and sees light use outside peak season.
Wind accelerates upslope after mid-morning and funnels across the pass with little shelter. Afternoon gusts typical. Early-start travelers avoid the roughest conditions. Temperature swings sharply with elevation and time of day; expect 25 degrees Fahrenheit on average through spring.
Over the last 30 days, Conness Pass averaged a NoGo Score of 31, with wind running 15 mph on average and peaking at 30 mph. The coming week will likely stay in the normal range for early season. Reference the chart below to spot calmer windows and colder stretches.
30 days back / 7 days forward
Today's score by factor
About Conness Pass
Conness Pass sits at the north rim of the Yosemite corridor, bridging the high country east of Highway 120. Access is primarily via the Gaylor Lakes approach from Tioga Lake trailhead or backcountry routes from the north. The pass itself is a natural col on the ridge between Mount Conness and the Gaylor Lakes basin. Nearest reliable service is in Lee Vining or Mono Lake communities; Highway 120 is the main artery, typically open late May through early November. Winter approach requires avalanche awareness and full winter mountaineering kit.
Spring and early summer bring the most variable conditions. The 30-day average temperature of 25 degrees Fahrenheit reflects a mix of lingering snow, afternoon warming, and night-time drops typical of high-elevation Sierra passes. Wind averages 15 mph over the last month, but afternoon thermals and pressure systems can push gusts to 30 mph or higher. Crowding sits at a low 3 out of 10 early season; traffic picks up sharply in July and August. Snow typically blocks the pass until mid-June; late-season storms can close it again in September.
Conness Pass suits fast hikers, mountaineers, and backcountry travelers who time their crossings for stable weather and early starts. Experienced Sierra users plan around avalanche terrain on the approach and descent; check the Sierras Avalanche Center forecast before committing. Afternoon wind and white-out risk make a dawn departure essential. Parking at Tioga Lake trailhead fills by mid-morning on weekends in summer. Solo travel and short daylight windows make this a place for competent parties only.
The Gaylor Lakes basin immediately south offers a lower-risk introduction to the same high-Sierra terrain. Mount Conness itself, just east, is a scramble-accessible peak for those seeking elevation without the pass crossing. Highway 120 closure dates (typically late October to mid-May) are the binding constraint; confirm current conditions with Yosemite National Park or Mono County authorities before planning.