Powell Lake
Lake · 8,891 ft · Yosemite corridor
Powell Lake sits at 8,891 feet in the Yosemite corridor of California's Sierra Nevada, a high-alpine lake exposed to afternoon wind but sheltered by surrounding peaks during morning hours.
Powell Lake catches wind funneling off the open Sierra ridgeline by mid-afternoon; mornings are typically calm. The 30-day average wind of 9 mph masks afternoon gusts that can exceed 20 mph. Water temperature averages 34 degrees Fahrenheit. Head here before noon if you're paddling or fishing.
Over the last 30 days, Powell Lake has averaged a NoGo Score of 34 with temperatures holding at 34 degrees Fahrenheit and wind averaging 9 mph. The 7-day outlook shows typical spring variability: calm mornings followed by afternoon gusts. Plan around the morning window; avoid the lake after 2 p.m. unless you're equipped for sustained wind.
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About Powell Lake
Powell Lake lies in the high Sierra backcountry east of Yosemite National Park, accessible via Highway 120 and trailhead access from the Lee Vining area. The lake sits at 8,891 feet elevation on the eastern slope, well away from the main valley traffic. The approach involves a moderate hike through snowmelt-fed terrain; check Highway 120 opening conditions in spring before committing. The lake drains into the Mono Basin system. Base popularity is low (0.25), meaning you will encounter far fewer visitors than at Tenaya or Ellery lakes nearby.
Spring and early summer bring snowpack; expect snow cover through May in most years, with avalanche terrain present on surrounding slopes. Summer conditions (late June through August) offer the most stable weather, with afternoon winds averaging 9 mph but climbing to 24 mph on windy days. By late September, temperatures drop below freezing at night. Winter access requires snowshoe or ski, and avalanche hazard increases significantly on steeper flanks. The 30-day average temperature of 34 degrees reflects late spring and early autumn character; summer highs reach into the low 40s Fahrenheit at the lake surface.
Powell Lake suits experienced alpine backpackers, cold-water paddlers, and anglers willing to plan around wind and snowpack. The morning calm window (sunrise to roughly 1 p.m.) is prime for any activity; afternoon winds make it inhospitable for kayaks or canoes without expert skill. Parking at the trailhead is limited; arrive early on weekends or choose a weekday. Bring avalanche awareness and a beacon if the approach crosses steep terrain with lingering snow. Water is too cold for swimming except briefly in late August.
Nearby alternatives include Tenaya Lake (lower elevation, warmer, more crowded) and Ellery Lake (similar exposure, slightly easier access). The Mono Basin lakes share Powell's eastern Sierra character: thin air, cold water, reliable afternoon wind. Visitors pairing Powell with a second lake often choose Tenaya as a lower-elevation warm-up or a calm-day backup when Powell's afternoon wind peaks.