According to the 2023 USDA Hardiness Zone Map Yucca Valley, California is in Zones 8b (15°F to 20°F) and 9a (20°F to 25°F). There is no change from the 2012 USDA Hardiness Zone Map which has Yucca Valley in also in Zones 8b (15°F to 20°F) and 9a (20°F to 25°F).