PUMICE FLAT GROUP CAMP
Campground · Yosemite corridor
Pumice Flat Group Camp sits at 7,697 feet in the high Sierra Nevada along the Yosemite corridor. A high-elevation group-only site best suited to organized parties planning around wind and snow.
Wind picks up reliably by mid-afternoon; mornings are calmer. Spring snow lingers at this elevation and crowds are light year-round (30-day average crowding 12). The 30-day average temperature of 34°F and max wind of 27 mph demand gear rated for alpine conditions.
Over the last month, Pumice Flat averaged a NoGo Score of 17 with temperatures holding at 34°F and winds averaging 8 mph. Conditions here track the snowpack decline and rising afternoon thermals typical of late spring in the high Sierra. The week ahead will show whether warming pushes the site more reliable or if wind remains the limiting factor for group trips.
30 days back / 7 days forward
Today's score by factor
About PUMICE FLAT GROUP CAMP
Pumice Flat Group Camp is a high-elevation group-only campground located at 7,697 feet in the eastern Sierra Nevada within the Yosemite corridor. The site lies along the eastern approach to Yosemite, accessible via Highway 120 (Tioga Road) from the Lee Vining side or from Yosemite Valley. Access from the west requires crossing the Sierra crest; the eastern gateway (Lee Vining) sits roughly 45 miles away via Highway 120. This is backcountry camping for organized groups only; private sites and commercial campgrounds lie closer to valley floors. The location sits at the margin between high-desert and montane forest, with exposure to wind funneling off the eastern Sierra slopes.
Spring conditions at Pumice Flat are defined by lingering snowpack and strong afternoon wind. The 30-day rolling average temperature of 34°F reflects the elevation; snow typically persists into late spring, limiting reliable camping windows. Wind averages 8 mph over the month but gusts to 27 mph, particularly in afternoons when solar heating destabilizes the upper atmosphere. Crowds remain minimal (12 on the 30-day crowding average) because the group-only restriction and remote location filter casual visitors. By late summer, temperatures climb into the low 50s and wind subsides, but smoke from Sierra fires can degrade air quality. Early fall offers the most stable conditions; winter closures depend on snowpack and road conditions on Highway 120.
Pumice Flat suits large organized groups (scout troops, family reunions, climbing clubs) who can coordinate logistics and tolerate primitive facilities. The remote location and group-only policy mean you will not encounter the casual walk-up camping crowd; your experience depends entirely on your party's preparedness. Experienced high-Sierra users plan trips for late September through early October when afternoon wind is most predictable and snow is gone. Spring and early summer require careful monitoring of Highway 120 opening and snowpack forecasts; many groups skip these seasons because conditions are unreliable. Afternoon wind is the dominant planning constraint; head out before 2 p.m. if you are hiking or conducting activities sensitive to gusts. Parking is limited and must be coordinated in advance with the group reservation.
Visitors considering Pumice Flat should compare conditions with nearby Tioga Lake (lower elevation, more wind exposure) and Tenaya Lake (lower, warmer, more crowded). The Yosemite corridor offers a spectrum of sites; this one prioritizes isolation and group size over accessibility. If your group needs reliable weather windows and minimal crowds, Pumice Flat's 30-day average NoGo Score of 17 reflects the trade-off between exposure and solitude. Smaller parties or those seeking amenities should consider lower-elevation campgrounds on the Highway 120 corridor or within Yosemite Valley proper.