According to the 2023 USDA Hardiness Zone Map Oljato-Monument Valley, Utah is in Zones 7b (5°F to 10°F), 7b (5°F to 10°F), 8a (10°F to 15°F) and 8a (10°F to 15°F). This is a change from the 2012 USDA Hardiness Zone Map which has Oljato-Monument Valley in Zones 7b (5°F to 10°F) and 8a (10°F to 15°F).