Foerster Peak
Peak · 12,061 ft · Yosemite corridor
Foerster Peak is a 12,061-foot alpine summit in Yosemite's high Sierra corridor. Exposed granite and snowfield approaches demand stable weather and winter avalanche awareness.
Foerster Peak sits in the jet-stream wind channel above timberline. Morning conditions are calmer; afternoon wind typically builds into the 12 mph average. Snow persists into early summer; wind-loaded aspects hold avalanche risk through spring.
Over the last 30 days, Foerster Peak averaged a NoGo Score of 32.0 with temperatures around 22 degrees Fahrenheit and average wind of 12 mph. The week ahead will track typical late-spring patterns for the Yosemite corridor: watch for afternoon wind spikes, diminishing snowpack stability as daytime heating increases, and rising crowding on weekends as Highway 120 access improves.
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About Foerster Peak
Foerster Peak anchors the eastern rampart of the Yosemite high country, standing at 12,061 feet in the Sierra Nevada crest zone. Access from the west runs through Tuolumne Meadows, reachable via Highway 120 from the Central Valley or Highway 395 from the Mammoth Lakes side. The peak sits in snow-fed country on the boundary of steep avalanche terrain; routes ascend through granite slabs and snowfield. Early-season approaches (before late July) encounter significant snow cover and require glacier sense and avalanche awareness. The nearest trailhead is typically 8 to 12 miles away depending on approach.
Winter and spring conditions dominate visitor planning. Foerster Peak averages 22 degrees Fahrenheit over rolling 30-day windows, with temperatures ranging from 9 to 35 degrees Fahrenheit across a full year. Wind averages 12 mph but gusts to 40 mph are routine, particularly in afternoon hours when thermals collide with the crest exposure. Snow depth fluctuates dramatically; April and May see rapid melt cycles that create unstable wet-slab conditions on south-facing slopes. By August, most snow vanishes and afternoon thunderstorms replace wind as the primary hazard. Crowds stay low through spring (rolling 30-day average of 3.0) because access is blocked or difficult; they spike sharply once Highway 120 fully opens.
Foerster Peak suits experienced mountaineers and off-trail winter climbers comfortable navigating avalanche terrain and reading snow stability. Casual day hikers should avoid it entirely; the approach lacks maintained trail, routefinding is complex, and exposure is genuine. Winter ascents require avalanche rescue training, beacon, probe, and shovel. Spring climbers must assess snowpack daily and abandon if slope angle, wind slab, or thermal stress suggest instability. Afternoon conditions are universally worse; start before dawn and descend before wind load peaks. Parking at Tuolumne Meadows fills rapidly on summer weekends; early arrival (before 8 am) is non-negotiable for Saturday and Sunday attempts.
Nearby alternatives include Cathedral Peak (10,911 feet) and Unicorn Peak (10,823 feet), both more accessible and less avalanche-prone. Lyell Canyon offers a lower-elevation snow route without steep terrain. Visitors planning Foerster should pair it with Tuolumne Meadows wildflower timing (early August) or use it as a spring ski-mountaineering objective before the snowpack rots. The SAC avalanche center issues forecasts specific to this zone; check the forecast before committing to any spring or early-summer ascent.