According to the 2023 USDA Hardiness Zone Map Black Butte Ranch, Oregon is in Zones 6a (-10°F to -5°F) and 6b (-5°F to 0°F). There is no change from the 2012 USDA Hardiness Zone Map which has Black Butte Ranch in also in Zones 6a (-10°F to -5°F) and 6b (-5°F to 0°F).