Arizona Frost Dates
Arizona has sharp contrasts between low desert heat and the cooler uplands, so the growing season changes quickly with elevation. Frost is mostly a winter concern in higher country and interior basins, while gardeners in the warmest southern deserts plan more around brief cold snaps.
Look up your exact frost dates
Frost timing shifts across Arizona with elevation and distance from water. Enter your ZIP code for dates from your nearest weather station.
Arizona locations
| ZIP | Area | Hardiness zone |
|---|---|---|
| 85034 | Phoenix | 10a |
| 85142 | Queen Creek | 9b |
| 85208 | Mesa | 9b |
| 85281 | Tempe | 9b |
| 85351 | Sun City | 9b |
| 85363 | Youngtown | 9b |
| 85377 | Carefree | 9b |
| 85541 | Payson | 8b |
| 85603 | Bisbee | 8b |
| 85640 | Tumacacori-Carmen | 8b |
| 85701 | Tucson | 9b |
| 85704 | Casas Adobes | 9a |
| 85705 | Tucson | 9b |
| 85719 | Tucson | 9b |
| 85721 | Tucson | - |
| 85724 | Tucson | 9b |
| 85730 | Tucson | 9a |
| 85737 | Oro Valley | 9a |
| 86015 | Bellemont | 5b |
| 86331 | Jerome | 8b |
| 84531 | Halchita | 7b |
| 84536 | Oljato-Monument Valley | 8a |
| 85003 | Phoenix | 10a |
| 85004 | Phoenix | 10a |
| 85006 | Phoenix | 10a |
| 85007 | Phoenix | 10a |
| 85008 | Phoenix | 10a |
| 85009 | Phoenix | 10a |
| 85012 | Phoenix | 10a |
| 85013 | Phoenix | 9b |
| 85014 | Phoenix | 10a |
| 85015 | Phoenix | 9b |
| 85016 | Phoenix | 10a |
| 85017 | Phoenix | 9b |
| 85018 | Phoenix | 10a |
| 85019 | Phoenix | 9b |
| 85020 | Phoenix | 10a |
| 85021 | Phoenix | 9b |
| 85022 | Phoenix | 9b |
| 85023 | Phoenix | 9b |
| 85024 | Phoenix | 10a |
| 85026 | Phoenix | 10a |
| 85027 | Phoenix | 10a |
| 85028 | Phoenix | 10a |
| 85029 | Phoenix | 9b |
| 85031 | Phoenix | 9b |
| 85032 | Phoenix | 9b |
| 85033 | Phoenix | 9b |
| 85035 | Phoenix | 9b |
| 85037 | Phoenix | 9b |
| 85040 | Phoenix | 10a |
| 85041 | Phoenix | 10a |
| 85042 | Phoenix | 10a |
| 85043 | Phoenix | 9b |
| 85044 | Phoenix | 10a |
| 85045 | Phoenix | 10a |
| 85048 | Phoenix | 9b |
| 85050 | Phoenix | 10a |
| 85051 | Phoenix | 9b |
| 85053 | Phoenix | 9b |
Source: NOAA 1991–2020 U.S. Climate Normals (public domain) and USDA 2023 Plant Hardiness Zone Map. Page updated Aug 4, 2026.