According to the 2023 USDA Hardiness Zone Map Hinsdale County, Colorado is in Zones 4a (-30°F to -25°F), 4b (-25°F to -20°F), 5a (-20°F to -15°F), 5b (-15°F to -10°F) and 6a (-10°F to -5°F). There is no change from the 2012 USDA Hardiness Zone Map which has Hinsdale County in also in Zones 4a (-30°F to -25°F), 4b (-25°F to -20°F), 5a (-20°F to -15°F), 5b (-15°F to -10°F) and 6a (-10°F to -5°F).