Aspen Group Campground
Campground · Mammoth Lakes corridor
Aspen Group Campground sits at 8346 feet in the Mammoth Lakes corridor of California's eastern Sierra Nevada. A high-elevation forest camp with moderate wind exposure and cooler temperatures than lower valley sites.
Wind averages 10 mph but gusts frequently to 33 mph, driven by afternoon thermals off the Mammoth Basin. Morning calm typically lasts until mid-day. Temperature hovers around 30 degrees Fahrenheit across the 30-day average. Afternoon deterioration is the rule, not the exception.
Over the last 30 days, Aspen Group has averaged a NoGo Score of 15.0 with temperatures around 30 degrees and a 30-day average wind of 10 mph. The week ahead will follow the same pattern: calm mornings, rising wind by afternoon, and crowding concentrated around weekends. Plan early starts and monitor afternoon wind before committing to afternoon activities.
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About Aspen Group Campground
Aspen Group Campground is a group-only reservation site in the Mammoth Lakes corridor, accessed from US Highway 395 north of Mammoth Lakes. The campground sits in mixed conifer forest at 8346 feet elevation, roughly 10 minutes from the town of Mammoth Lakes via local roads. This elevation places it above the valley floor but below the true alpine; snow persists longer here than at Mammoth's downtown core. The site is managed for organized groups only, not individual campers, making it substantially less crowded than walk-up campgrounds nearby. Access is straightforward: take Highway 395 to Mammoth Lakes, then follow signage toward the Lakes Basin. The camp fills quickly on weekends during the main season, so reservations are mandatory.
The 30-day average NoGo Score of 15.0 reflects typical spring conditions at this elevation: freezing nights, variable days, and persistent afternoon wind. Temperature swings from a 365-day low of 13 degrees to a high of 44 degrees across the year; spring sits near the chilly end of that range. Wind is the dominant factor. The 30-day average of 10 mph belies the afternoon surge; maximum wind over the same period hit 33 mph, consistent with the thermal pumping that drives afternoon gusts in high Sierra basins. Crowding averages 8.0 out of 10 over 30 days, heavily skewed toward weekends and holiday periods. Weekday mornings offer substantially better conditions and lower density than Friday through Sunday.
Aspen Group Campground suits organizations: scout troops, family reunions, small mountaineering clubs. The group-only format eliminates the chaos of individual car-camper turnover. Experienced high-Sierra visitors plan around wind, not around the camp itself. Head here on calm mornings; skip the afternoon if you're sensitive to wind or planning sensitive activities outdoors. Parking is group-dedicated, so logistics are simpler than at sprawling public lots. Snow lingers into early summer at this elevation; confirm the road and site are clear before committing to an early-season booking. The camp's forest setting provides moderate wind shelter compared to exposed ridgetop sites, but afternoon wind still rises predictably.
Nearby Mammoth Lakes offers commercial lodging, restaurants, and resupply options within a few minutes' drive. Lower-elevation sites like Convict Lake Campground (south and lower) see warmer days and slightly less afternoon wind but draw much heavier individual camper traffic. Pine City Campground and other walk-up sites on the eastern slope of the Mammoth ridgeline offer more open basin exposure and colder nights. For large groups, Aspen Group's reservation exclusivity and proximity to town make it the practical anchor for a multi-day Sierra Nevada gathering.