Rosalie Lake
Lake · 9,327 ft · Yosemite corridor
Rosalie Lake sits at 9,327 feet in the Yosemite Sierra Nevada corridor, a glacial basin fed by snowmelt and ringed by steep granite. Wind and cold dominate the typical visit.
Afternoon wind is reliable here, building by mid-day as solar heating intensifies the pressure gradient down the drainage. The 30-day average wind of 9 mph masks sharper gusts that peak in the 26 mph range. Morning calm is fleeting; arrive before 10 a.m. if you're sensitive to wind.
Over the last 30 days, Rosalie Lake averaged a NoGo Score of 34.0 with temperatures hovering near 29 degrees Fahrenheit and the 30-day average wind of 9 mph. The next 7 days will track the seasonal transition: snowpack stability weakens as days lengthen, and afternoon wind typically strengthens. Watch the hourly wind grid for the morning window before conditions deteriorate.
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About Rosalie Lake
Rosalie Lake occupies a cirque basin in the high Sierra roughly 9,327 feet above sea level, accessed via the Mono Pass Trail from the Tioga Pass corridor. The primary route climbs from Tioga Lake to the northeast; Highway 120 (Tioga Pass Road) provides the gateway from the Yosemite Valley side, though access is limited to snow-free months. The lake itself drains northward into Mono Basin. The basin sits directly beneath avalanche terrain on all but the eastern shore; approach slope stability carefully in spring and early summer when wet-slab risk peaks.
Rosalie Lake experiences acute seasonality. Winter brings deep snow, temperatures regularly dipping to 14 degrees Fahrenheit or lower, and avalanche hazard that closes the approach corridor for weeks at a time. Spring unlocks the trail but introduces wet slab instability on steeper headwalls. By late summer, the lake is typically snow-free around its shoreline but afternoon wind dominates; the 30-day average temperature of 29 degrees Fahrenheit reflects the ongoing cold at this elevation even during warmer seasons. Crowding remains minimal compared to valley lakes, with a 30-day average crowding of 6.0, making solitude reliable.
Rosalie Lake suits hikers seeking a true high-Sierra crossing rather than a day-use destination. The wind, cold, and avalanche exposure demand experience and attention to snowpack conditions and weather forecasts. Experienced visitors plan for morning windows before 10 a.m., carry extra insulation, and check the avalanche center's current advisory before the final approach. The max wind of 26 mph in the rolling 30-day window is not unusual; afternoon paddling is risky, and exposed campsites demand wind-resistant setup. This is not a casual family lake.
Hikers crossing to Mono or climbing into the Sierra Crest via the Mono Pass Trail often combine Rosalie Lake with neighboring Mono Lake views and the higher cirques to the west. The Yosemite corridor from Tioga Pass offers parallel high-elevation lakes with similar avalanche terrain and wind exposure but slightly more sheltered basins; consult local bulletins for specific comparisons. Access windows are narrow and weather-driven; confirm Highway 120 conditions and snowpack status before committing.