Central California. San Francisco in Summer . And chillier in the evening than you might imagine. Zone 1 is the coldest; zone … The topography is so varied, the closness to water -- the cold Pacific or the warmer S.F. Of 24 climate zones defined in the Sunset Western Garden Book and the 20 zones defined by the United States Department of Agriculture (USDA), California has 20 and 16, respectively. The climate zone must be first determined before any new or renovation construction is began in order to ensure the proper efficiency energy features are used for that specific Climate Zone. The Growing Zones for Hops. San Francisco Border: Zone 10a 30°F to 25°F: Zone 10b 35°F to 30°F: A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone. Hops (Humulus lupulus) are deciduous, perennial vines that grow 15 to 25 feet tall and will climb a trellis, arbor or other structure. San Francisco bay area and inland area climate map from Sunset. San Francisco Bay Area and Inland Areas. There are many climates represented on the Central California map with both maritime and frigid mountains included in the area. It is located in the heart of the subtropical climate zone but experiences a relatively cool climate because of … San Francisco, California Hardiness Zone Map. San Martin: Zone 9a: 20°F to 25°F: San Mateo: Zone 10a: 30°F to 35°F: San Miguel: Zone 8b: 15°F to 20°F: San Nicolas Island: Zone 10b: 35°F to 40°F: San Pablo: Zone 9b: 25°F to 30°F: San Pasqual: Zone 9b: 25°F to 30°F: San Pedro: Zone 10b: 35°F to 40°F: San Quentin: Zone 10a: 30°F to 35°F: San Rafael: Zone … San Francisco is a good example of a city in Northern California. Having lived in the San Francisco Bay Area for over 25 years all I can say in answer to this question is that it depends on which block of which street one is talking about! The climate of San Francisco can be defined as "Mediterranean with cool summers". Bay, the elevation, exposure to winds,etc. In fact, the Fourth of July can feel colder than New Year's Eve. With effort and iterations over years, GardenZeus distilled California’s diverse […] Fog is wet. 12, San Francisco is Climate Zone 3 and Lake Tahoe is Climate Zone 16. To standardize Title 24 calculations and to provide a basis for presenting the criteria, the California Energy Commission has established 16 climate zones which are used with both the low-rise residential and the non-residential Title 24 energy standards. Welcome to GardenZeus California Climate Zones, an innovative, dynamic climate-mapping system with free search by zip code. Sunset identified seven climate zones in and around the San Francisco bay area. 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