Campgrounds and RV parks near Grayson, CA

Most camping activity centers on the rivers that converge in this stretch of the valley. The Stanislaus River corridor at Caswell Memorial State Park offers swimming, fishing for catfish and bass, tube floating in calm water, and a nature trail loop through riparian oak woodland. At George J. Hatfield State Recreation Area, visitors fish, picnic, wade, sunbathe, hike, kayak, and study nature along the Merced River, though there is no lifeguard service and the riverbanks are narrow and steep. Anglers target rainbow trout and bass in spring, and catfish and perch year-round. Day trips from Grayson reach the San Luis Reservoir to the west, Modesto and Ripon to the north and east, and Yosemite's western gateways within a half-day drive.

The Central Valley has a Mediterranean climate, so seasonality drives both comfort and availability. Summers are hot, arid, and clear, while winters are short, cool, wet, and partly cloudy. Late spring and early fall are the most comfortable windows for tent campers and travelers without strong air conditioning, with mild days and cool nights. Campsites are usually booked up for weekends during the summer months at the popular state parks, particularly along the rivers where families come to cool off. Mosquitoes become particularly active during summer due to the rivers and dense vegetation, so insect repellent is essential at riparian sites like Caswell and Hatfield. Winter brings the bulk of the region's rain and the valley's well-known tule fog, which can sharply reduce highway visibility in the early morning. Travelers heading to Caswell Memorial State Park in winter and early spring should check the latest park alerts, as portions of the park have been affected by past flooding.

Expect a clear split between full-service private parks and minimal state-park sites. Private parks like Kit Fox RV Park LLP, Turtle Beach RV Resort, and French Camp RV Park typically offer full hookups, longer pull-throughs, laundry, and Wi-Fi suited to bigger Class A and fifth-wheel rigs. State-park campgrounds are simpler and more shaded. The campground at Caswell is designed for tent camping and smaller RVs, with a maximum length of 24 feet for motorhomes and 21 feet for trailers, no hookups, restrooms with flush toilets and hot showers, drinking water, and each site equipped with a picnic table, camp stove, and food locker. At George J. Hatfield, campsites are tent-only and require a short walk from the parking area, with tables, drinking water, and nearby restrooms. Cell coverage is generally usable along the I-5 and Highway 99 corridors and patchier closer to the rivers.