Williams Butte
Peak · 8,287 ft · Yosemite corridor
Williams Butte is an 8,287-foot peak in the Yosemite corridor of California's Sierra Nevada. Sit-back ridge and open slopes make it a winter and spring alpine destination, exposed to afternoon wind.
Wind funnels across the open summit and ridgelines by early afternoon, backing off after sunset. Morning calm is the rule; expect 11 mph average with gusts to 36 mph by 2 pm. Temperature swings from 24 degrees in deep winter to 59 degrees in summer. Crowding stays light year-round.
Over the last 30 days, Williams Butte has averaged a 32 NoGo Score with temperatures holding at 41 degrees and wind at 11 mph, though gusts have spiked to 36 mph. The week ahead tracks typical late-April patterns: morning windows tighten, afternoon wind dominates, and snowpack stability becomes the governing constraint above 8,000 feet. Plan summit attempts before 10 am and monitor the Sierra Avalanche Center for wind-slab risk.
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About Williams Butte
Williams Butte sits on the east flank of the Yosemite high country, roughly 15 miles northeast of Tuolumne Meadows along the Highway 120 corridor. The peak is accessed from Tioga Pass Road or via the north rim trailhead near Tenaya Lake. Primary gateway is Lee Vining or Mammoth Lakes, both 45 to 60 minutes from the trailhead. Winter access depends on Highway 120 snowplowing; the road typically opens by late May. The summit sits above 8,000 feet with clear sight-lines to the Clark Range and Mono Basin.
Conditions at Williams Butte shift sharply between seasons. Winter and spring bring wet-slab avalanche terrain; the 365-day temperature range spans 24 to 59 degrees Fahrenheit. The 30-day average wind of 11 mph masks afternoon acceleration to 36 mph. At 8,287 feet, the site sits above the tree line and receives significantly more wind exposure than Tuolumne Meadows or Yosemite Valley. Crowding averages 3.0 on the rolling 30-day scale, making it quiet relative to nearby Lyell Canyon or Cathedral Lakes trailheads. Snow lingers well into June; melt-out typically occurs by mid-July.
Williams Butte suits experienced mountaineers and winter-trained climbers. The open terrain and avalanche exposure demand route-finding skills and snowpack assessment. Late-spring ascents (April through May) require beacon, probe, and shovel; afternoon wind becomes the secondary hazard once snow consolidates. Solitude is the draw for those avoiding Yosemite Valley crowds. Day trips dominate; the peak does not have a summit register or designated camp area. Parking at trailheads fills quickly on weekends after Highway 120 opens; arrive before dawn or plan a weekday approach.
Nearby alternatives include Cathedral Lakes (closer to Tuolumne Meadows, lower elevation, less avalanche exposure) and Lyell Canyon (longer approach, steadier weather, heavily used). Dana Plateau to the south sits at similar elevation but offers a more sheltered ridge walk. Mono Basin viewpoints on Highway 395 give comparable vistas with no avalanche hazard and vehicle access. Williams Butte appeals to climbers who value isolation, high-alpine terrain, and the acceptance of technical risk over comfort or certainty.