Summerdale Campground
Campground · 4,858 ft · Yosemite corridor
Summerdale Campground sits at 4,858 feet in the Yosemite corridor, a modest Sierra Nevada base camp west of the park proper. Cooler and less crowded than valley floors, it anchors the approach to Wawona and Highway 41.
Wind averages 6 mph here but can gust to 21 mph; afternoon thermals and drainage flows from higher elevations drive the variance. Mornings are calmer. Temperature swings sharply with elevation; at 4,858 feet, expect conditions 10 to 15 degrees cooler than Yosemite Valley. Spring snowmelt runoff peaks in June.
Over the last 30 days, Summerdale has averaged a NoGo Score of 16.0 with temperatures around 42 degrees Fahrenheit and an average wind of 6 mph. The week ahead will show whether the typical shoulder-season pattern holds or if a warming trend pushes crowds higher. Track both score and wind in the chart below; spikes often coincide with Highway 41 access windows.
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Today's score by factor
About Summerdale Campground
Summerdale Campground sits on the western flank of the Yosemite corridor, roughly 30 miles west of Yosemite Valley via Highway 41. The campground occupies a transitional zone between the Sierra foothills and the high country, at 4,858 feet elevation. Access is straightforward: turn off Highway 41 near Wawona and follow local roads north. The drive from the Highway 395 corridor takes 90 minutes to 2 hours depending on entry point and snow conditions on 41. Summerdale is a stepping stone for parties heading deeper into the wilderness or using it as a base for Wawona-area exploration. The campground sits on National Forest land, away from park entrance fees but within striking distance of park trailheads.
Conditions at Summerdale are shaped by elevation and aspect. The 30-day average temperature is 42 degrees Fahrenheit; annual swings run from a winter minimum near 29 degrees to summer highs around 59 degrees. Wind is typically light to moderate, averaging 6 mph over the last month, but afternoon thermals and katabatic flow off higher ridges can push gusts to 21 mph. Spring brings runoff, and snowpack persists into May in most years. Crowding averages 12 on the rolling 30-day metric, making it far quieter than Yosemite Valley or heavily trafficked campgrounds downstream. Late September through October offers stable weather, moderate temperatures, and minimal visitation. Winter and early spring see intermittent closures due to snow and slick conditions on Highway 41.
Summerdale suits parties seeking a high-Sierra base camp without the parking battles and entrance-fee overhead of Yosemite proper. Car campers, day-hikers launching into the Wawona backcountry, and climbers acclimatizing to elevation find the location practical. The NoGo Score averages 16.0 over 30 days, indicating generally favourable conditions for most activities. Experienced visitors plan around afternoon wind, which typically begins mid-day and persists until sunset. Spring visitors should verify Highway 41 is clear before departing; washouts and late-season snow closures are common. Parking is ample compared to valley campgrounds. Smoke from Sierra fires can degrade visibility and air quality in late summer and early autumn; check air quality indices before committing a trip.
Summerdale pairs well with day trips to Chilnualna Falls, nearby reservoir recreation, and Wawona loop trails. It sits roughly 40 miles north of Bass Lake and Highway 41's lower-elevation gateway towns. For climbers and high-altitude hikers, Summerdale offers a quieter alternative to Tuolumne Meadows, though access times are longer. Visitors seeking more crowding and park amenities should head east to Yosemite Valley; those wanting true wilderness solitude should push further north. The campground's moderate elevation makes it accessible when higher Sierra passes are closed, giving it value in shoulder seasons when Tioga Road and Mammoth access are restricted.