Deconstruct SunArizona Hardiness Zones
Arizona covers USDA plant hardiness zones 5b to 10a on the 2023 map, so its coldest areas average −15 to −10 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Arizona hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| Phoenix | 9b | 25 to 30 °F | 14h 23m | 9h 56m |
| Tucson | 9b | 25 to 30 °F | 14h 16m | 10h 03m |
| Mesa | 9b | 25 to 30 °F | 14h 22m | 9h 56m |
| Chandler | 9b | 25 to 30 °F | 14h 21m | 9h 57m |
| Gilbert | 9b | 25 to 30 °F | 14h 22m | 9h 57m |
| Glendale | 9b | 25 to 30 °F | 14h 23m | 9h 56m |
| Scottsdale | 10a | 30 to 35 °F | 14h 24m | 9h 55m |
| Peoria | 10a | 30 to 35 °F | 14h 24m | 9h 54m |
| Tempe | 10a | 30 to 35 °F | 14h 22m | 9h 56m |
| Surprise | 9b | 25 to 30 °F | 14h 24m | 9h 55m |
| Flagstaff | 6a | −10 to −5 °F | 14h 32m | 9h 47m |
| Yuma | 10a | 30 to 35 °F | 14h 17m | 10h 01m |
| Prescott | 7b | 5 to 10 °F | 14h 29m | 9h 50m |
Gardening in Arizona?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Arizona?
Arizona spans USDA zones 5b to 10a on the 2023 map. Among its larger cities, Flagstaff is coldest (zone 6a) and Scottsdale is warmest (zone 10a).
How do I find my exact zone in Arizona?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Arizona get?
In Phoenix, an open spot gets up to 14.4 hours of daylight in June but only 9.9 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.