Rock Creek Lake Group Campground
Campground · Mammoth Lakes corridor
Rock Creek Lake Group Campground sits at 9,724 feet in the Mammoth Lakes corridor of California's Sierra Nevada. A high-elevation alpine lake basin, it offers shelter from afternoon wind typical of the exposed high country.
Wind builds steadily through the morning and peaks mid-afternoon as lake thermals accelerate. The 30-day average wind runs 10 mph, but gusts reach 33 mph by late day. Head here for calm mornings before 11:00 a.m.; skip the afternoon if you're paddling or setting up exposed camp.
The 30-day average score of 14.0 reflects volatile spring conditions at this elevation. Afternoon wind is the dominant driver; temperature hovers near 30 degrees Fahrenheit on average, with crowding at 8.0 across the rolling month. The week ahead will show whether calms persist or wind ramps to the seasonal norm of 33 mph peak gusts.
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About Rock Creek Lake Group Campground
Rock Creek Lake Group Campground occupies a subalpine basin on the north side of Rock Creek Lake, accessible via Rock Creek Road off Highway 395 north of Mammoth Lakes. The campground sits 9,724 feet elevation and functions as a high-country launch point for the Mammoth Lakes corridor. Highway 395 is the primary arterial; Rock Creek Road branches east and climbs steeply into the drainage. The site hosts a mix of RV and tent camping with vault toilets and no potable water on-site; bring containers or purify lake water. Access is weather-dependent; the road closes seasonally when snow or washout make passage unsafe.
Spring conditions at Rock Creek Lake Group are volatile. The 30-day average temperature of 30 degrees Fahrenheit masks wide daily swings; overnight lows drop below freezing regularly through May, while afternoon sun can push highs into the mid-40s. Wind is the dominant constraint: the 30-day average wind runs 10 mph, but max gusts in the rolling month hit 33 mph, driven by afternoon heating and thermal circulation off the lake basin. Crowding averages 8.0 out of 10 on weekends as Highway 395 corridor traffic rises. By late spring, snowpack begins to retreat, opening higher passes and pulling users toward the crest. Late September through early October offers calmer conditions and fewer crowds as summer recreation traffic declines and fall weather settles.
Rock Creek Lake Group suits groups planning alpine fishing, photography, or high-Sierra car camping. The site works for experienced high-country campers comfortable with cold nights, variable wind, and limited water infrastructure. Experienced paddlers know to launch by mid-morning before afternoon wind makes the lake choppy; anglers targeting cutthroat and brook trout plan early starts. Parking at the group campground fills quickly on weekends during open season. Bring a stove; firewood is scarce at elevation and overnight temperatures hover around 30 degrees Fahrenheit. Water treatment or containers are essential; the lake is glacially-fed and cold.
Nearby Rock Creek Lake itself, a shallow alpine basin, offers a quieter alternative to the group campground for smaller parties. The Mammoth Lakes basin lies directly south via Highway 395, offering warmer elevation and more services. Convict Lake and its campground are 30 minutes south and sit at lower elevation with steadier afternoon wind exposure. Long Valley caldera opens to the east; Highway 395 provides access to Owens Valley and the Inyo National Forest. For groups seeking car-accessible high Sierra camping with fewer crowds than Mammoth proper, Rock Creek Lake Group Campground offers genuine alpine character at the cost of cold nights and afternoon wind.