Mount Maclure
Peak · 12,903 ft · Yosemite corridor
Mount Maclure is a 12,903-foot peak in the Yosemite corridor of California's Sierra Nevada. A remote high-country summit with avalanche terrain, it rewards early starts and calm conditions.
Wind accelerates as afternoon progresses, commonly reaching 12 mph average with gusts to 40 mph by late day. Morning hours are significantly calmer. Snowpack and exposure to westerly flow shape stability and comfort. Plan around wind, not around it.
Over the past 30 days, Mount Maclure averaged a NoGo Score of 33.0 with temperatures holding near 22 degrees F and average wind of 12 mph. The week ahead will likely track similar patterns; watch for afternoon wind spikes and assess snowpack stability before committing to exposed slopes.
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About Mount Maclure
Mount Maclure sits at the northern edge of the Yosemite high country, approximately 10 miles east of Tenaya Lake and due north of Mount Lyell. Access via Highway 120 (Tioga Road) to the Lyell Canyon trailhead near Tuolumne Meadows is standard; the peak itself requires off-trail climbing above timberline. Highway 120 typically closes from November through late spring, making this a summer and early-autumn destination. The approach crosses the Dana Plateau and traverses glacially-carved terrain with water crossings that swell with snowmelt.
Winter and spring conditions here are severe. The 365-day temperature range spans 9 to 35 degrees F, reflecting the extreme cold at elevation above 12,000 feet. Avalanche terrain is widespread; slopes facing west and southwest trap wind-loaded snow and are prone to wind-slab failure in moderate to strong winds. The 30-day rolling average wind of 12 mph masks afternoon gusts exceeding 40 mph. Snowpack persists well into July in most years. Crowds remain low year-round due to remoteness and access constraints; the 30-day average crowding score is 3.0, far below valley and lake destinations.
Mount Maclure suits experienced mountaineers and winter climbers comfortable with avalanche terrain and self-rescue. Summer ascents via Lyell Canyon are technically moderate but exposed; the peak offers a high-altitude platform above the Yosemite backcountry. Winter and spring approaches demand avalanche education and beacon, shovel, and probe. Most visitors arrive between late July and early September when Highway 120 is reliably open and snowpack has consolidated. Afternoon wind on exposed ridges is the dominant hazard; descend by noon if conditions deteriorate. Solo travel is uncommon; most parties are small groups with mountaineering experience.
Mount Lyell, 11 miles south, is a slightly lower (13,114 ft) alternative with comparable access and avalanche exposure but marginally better afternoon shelter from the north. Tenaya Lake, 10 miles west, offers dramatic alpine scenery with significantly lower avalanche risk and crowds suitable for car-camping and day-hiking. The Yosemite corridor as a whole peaks in visitation in summer; Mount Maclure's low base popularity reflects its technical nature and remoteness rather than accessibility.