individuals committed to the preservation of the California Trail. Climate The park has either a Mediterranean climate or a humid continental climate (Köppen climate classification Dsb/Csb) with cold, snowy winters and warm, dry summers. Winters are cold with a January average of and temperatures below occur on 7.8 days per year. Most of the precipitation falls during the winter months with an average precipitation of and an average snowfall of . Summers are dry with warm daytime temperatures (can exceed on 5.6 days) and cold nighttime temperatures that often reach below . The average high in the warmest month, July is and the average low is with a mean precipitation of only . The record low is on December 25, 1965, and the record high is in July 2002 and August 1981. See also List of California state parks References External links Donner Memorial State Park State parks of California Parks in Nevada County, California Donner Party History museums in California Museums in Nevada County, California California Historical Landmarks National Historic Landmarks in California National Register of Historic Places in Nevada County, California History of Nevada County, California Protected areas established in 1928 1928 establishments in California Campgrounds in California Protected areas of the Sierra Nevada (United States) Temporary populated places on the National Register of Historic Places Stephens–Townsend–Murphy Party