Lake Mary
Trailhead · 8,890 ft · Mammoth Lakes corridor
Lake Mary sits at 8,890 feet in the Mammoth Lakes corridor of California's Sierra Nevada. A glacially-fed alpine lake ringed by lodgepole forest, it anchors the eastern watershed and draws hikers and anglers year-round.
Wind funnels across the open water by mid-afternoon, with gusts reaching the 30-day average of 12 mph or higher. Morning hours are notably calmer and warmer than afternoons. The lake itself is colder than surrounding valley air, creating strong thermal circulation patterns that peak between 2 and 5 p.m.
Over the last 30 days, Lake Mary has averaged a NoGo Score of 15.0 with temperatures near 31 degrees Fahrenheit and average wind of 12 mph. The week ahead shows typical spring variability; morning visits remain the safest bet for calm conditions. Watch for afternoon wind gusts and lingering snowpack on upper approaches.
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About Lake Mary
Lake Mary is a trailhead and popular alpine destination accessed via Mammoth Lakes Village. The lake sits at the north end of the Mammoth Lakes basin, roughly 15 minutes from the village core via Mammoth Lakes Road. Highway 395 is the primary corridor; the town of Mammoth Lakes is the nearest full-service hub. Early-season access depends on snowpack; upper trail sections may require microspikes or a later-season visit. Parking fills quickly on weekends, especially after winter weather clears high passes.
Lake Mary's climate is dominated by high-elevation exposure and diurnal wind. The 30-day average temperature of 31 degrees Fahrenheit reflects late-winter and early-spring conditions typical at this elevation. Wind peaks in afternoon and evening as thermal circulation develops; the 30-day maximum wind was 31 mph. Crowding averages 8.0 on the rolling 30-day metric, rising sharply once Highway 120 opens and wildflower season begins. Late September and early October offer calmer afternoons and fewer visitors than spring and summer months.
Lake Mary suits hikers, anglers, and photographers who tolerate cold water and afternoon wind. Visitors planning paddling or fishing should launch by 10 a.m. and depart by early afternoon before gusts intensify. Snow lingers in shaded cirques through early June; snowpack can trap water crossings or block informal spurs. The lake's elevation and orientation make it one of the windier spots in the Mammoth basin; experienced users plan around afternoon thermals rather than fight them. Parking shortages are common on sunny weekends; arrive early or visit on weekdays.
Nearby Mamie Lake and Horseshoe Lake offer similar elevation and alpine character with slightly less exposure to afternoon wind. Convict Lake, to the south and lower, stays warmer and calmer later into autumn. The Inyo National Forest manages the area; conditions and access are posted through the Mammoth Lakes Visitor Center and the Forest Service website. Winter travel requires avalanche awareness for surrounding peaks, though Lake Mary itself sits outside avalanche terrain.