Sierra Vista, Arizona Hardiness Zones

According to the 2023 USDA Hardiness Zone Map Sierra Vista, Arizona is in Zones 7b (5°F to 10°F), 8a (10°F to 15°F), 8b (15°F to 20°F) and 9a (20°F to 25°F). This is a change from the 2012 USDA Hardiness Zone Map which has Sierra Vista in Zones 7b (5°F to 10°F), 8a (10°F to 15°F) and 8b (15°F to 20°F).

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