Redtop
Peak · 9,970 ft · Yosemite corridor
Redtop sits at 9,970 feet in the high Sierra, a windswept alpine peak in the Yosemite corridor. Typically colder and more exposed than valley floors, it rewards early starts and clear-weather planning.
Wind funnels consistently across the exposed ridge; the 30-day average runs 8 mph, but afternoon gusts climb to 26 mph. Morning calm windows close by mid-day. Afternoon thunderstorms track northeast off the Sierra crest. Temperature swings 17 to 42 degrees across the year.
The rolling 30-day average score of 33 reflects a mixed window: low scores spike around 6 when wind and cold align, maxing at 50 on stable days. The 30-day average wind of 8 mph masks a wide spread; afternoon funneling is the rule. Plan for the next week by watching the chart for score dips and temperature swings.
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About Redtop
Redtop crowns a high-Sierra saddle within the Yosemite corridor, accessible via Highway 120 from Lee Vining or the western approach from Yosemite Valley. The peak sits remote from major trailheads; most approaches climb through avalanche terrain in winter and spring. Access gates and seasonal closures on Highway 120 control entry to the broader region. Base popularity here is low, meaning you'll encounter few other climbers once you reach the ridge. Drive time from Lee Vining is typically 90 minutes to the eastern trailhead; western approaches from Valley add several more hours.
Conditions at 9,970 feet track the high-Sierra pattern: the rolling 30-day average temperature of 30 degrees Fahrenheit puts sustained freezing temperatures from fall through spring. Snow lingers into late June; avalanche terrain is real on the approach slopes, and spring snowpack instability demands careful assessment of slab conditions before climbing. Wind dominates the experience; the 30-day average of 8 mph masks afternoon funneling that pushes gusts to 26 mph. Crowding averages 3 on the scale, remaining low even on weekends. Summer brings calmer windows and warmer afternoons, but afternoon thunderstorms develop by mid-month. Late September and early October offer the best balance of stable weather and snow-free access.
Redtop suits experienced mountaineers and scramblers comfortable with exposed ridges and self-rescue. The peak demands sound route-finding, competent snow travel in shoulder seasons, and readiness for rapid weather swings. Plan for a very early start to maximize calm morning windows before afternoon wind builds. Avalanche awareness is non-negotiable on the approach; consult the Sierra Avalanche Center before touching any slope. Parking at trailheads fills during peak weekends; arriving by dawn reduces friction. The exposed summit offers no shelter; bring extra insulation and be ready to descend if cloud moves in or wind surges.
Nearby peaks in the Yosemite corridor offer similar alpine character at comparable elevations. The Mono Basin approaches from Highway 395 provide faster access to other high-Sierra objectives if weather closes Redtop or Highway 120. Lower-elevation scrambles around Tenaya Lake and Cathedral Range give tactical alternatives in poor visibility or early season when snow blocks higher routes. Winter ascents are possible but demand technical mountaineering skills and snow climbing competence; the approach gullies can slide and the summit ridge is fully exposed.