Frost Dates & Planting Calendars in Arizona
Typical last spring frost, first fall frost, and growing-season length for 79 cities in Arizona, based on NOAA 1991–2020 climate normals. Click a city for its full frost-date summary, monthly temperature chart, and 42-crop planting calendar.
| City | Last Spring Frost (typical) | First Fall Frost (typical) | Growing Season | USDA Zone |
|---|---|---|---|---|
| Phoenix | January 5 | January 3 | 365 days | 10a |
| Tucson | January 20 | December 17 | 332 days | 9b |
| Mesa | February 13 | December 5 | 298 days | 9b |
| Chandler | February 13 | December 5 | 298 days | 9b |
| Gilbert | February 13 | December 5 | 298 days | 9b |
| Glendale | January 20 | December 15 | 331 days | 9b |
| Scottsdale | February 13 | December 5 | 298 days | 9b |
| Maryvale | January 20 | December 15 | 331 days | 9b |
| Peoria | January 20 | December 15 | 331 days | 9b |
| Tempe | February 13 | December 5 | 298 days | 9b |
| Deer Valley | January 8 | December 25 | 354 days | 10a |
| Tempe Junction | February 13 | December 5 | 298 days | 9b |
| Surprise | January 20 | December 15 | 331 days | 9b |
| Alhambra | January 21 | December 16 | 331 days | 9b |
| Yuma | January 8 | December 28 | 362 days | 10a |
| Ahwatukee Foothills | January 21 | December 16 | 331 days | 10a |
| San Tan Valley | February 1 | December 11 | 315 days | 9b |
| Avondale | January 7 | December 24 | 351 days | 9b |
| Goodyear | January 7 | December 24 | 351 days | 9b |
| Flagstaff | June 4 | September 28 | 115 days | 6a |
| Casas Adobes | February 26 | December 4 | 279 days | 9a |
| Central City | January 5 | January 3 | 365 days | 10a |
| Encanto | January 5 | January 3 | 365 days | 10a |
| Lake Havasu City | January 5 | December 29 | 365 days | 10a |
| Casa Grande | February 5 | December 6 | 305 days | 9a |
| Buckeye | January 7 | December 24 | 351 days | 9b |
| Catalina Foothills | February 20 | November 27 | 280 days | 9a |
| Maricopa | February 23 | November 24 | 274 days | 9a |
| Oro Valley | April 2 | November 11 | 222 days | 9a |
| Sierra Vista | April 5 | November 9 | 216 days | 8b |
| Prescott Valley | April 20 | October 27 | 188 days | 7b |
| Prescott | April 30 | October 20 | 172 days | 7b |
| Marana | February 23 | December 6 | 287 days | 9b |
| Bullhead City | January 4 | December 23 | 356 days | 9b |
| Apache Junction | February 11 | December 10 | 304 days | 9b |
| Sun City | January 20 | December 15 | 331 days | 9b |
| Queen Creek | February 1 | December 11 | 315 days | 9b |
| El Mirage | January 20 | December 15 | 331 days | 9b |
| San Luis | Frost-free | Frost-free | Year-round | 10a |
| Florence | January 30 | December 12 | 319 days | 9a |
| Kingman | April 2 | November 11 | 220 days | 8b |
| Drexel Heights | February 5 | December 9 | 307 days | 9a |
| Fortuna Foothills | Frost-free | Frost-free | Year-round | 10a |
| Sahuarita | February 25 | November 27 | 276 days | 9a |
| Sun City West | January 20 | December 15 | 331 days | 9b |
| Fountain Hills | January 6 | December 28 | 356 days | 9b |
| Anthem | January 8 | December 25 | 354 days | 9b |
| Green Valley | February 25 | November 27 | 276 days | 9a |
| Nogales | March 20 | November 17 | 239 days | 8b |
| Rio Rico | April 16 | November 2 | 199 days | 8b |
| Eloy | February 24 | November 28 | 273 days | 9a |
| Tanque Verde | January 26 | December 16 | 326 days | 9a |
| Douglas | March 18 | November 13 | 235 days | 8a |
| Flowing Wells | February 11 | December 2 | 293 days | 9a |
| Payson | April 29 | October 24 | 176 days | 8b |
| Somerton | Frost-free | Frost-free | Year-round | 10a |
| New River | January 15 | December 22 | 341 days | 9b |
| Sierra Vista Southeast | April 5 | November 9 | 216 days | 8b |
| Sun Lakes | February 1 | December 11 | 315 days | 9b |
| Paradise Valley | January 6 | December 26 | 353 days | 10a |
| Saddlebrooke | April 2 | November 11 | 222 days | 9a |
| Coolidge | February 17 | November 29 | 284 days | 9a |
| Tucson Estates | February 8 | December 10 | 303 days | 9a |
| New Kingman-Butler | April 2 | November 11 | 220 days | 8b |
| Cottonwood | March 30 | November 10 | 223 days | 8b |
| Verde Village | March 30 | November 10 | 223 days | 8b |
| West Sedona | April 1 | November 17 | 229 days | 8b |
| Camp Verde | April 16 | October 30 | 196 days | 8b |
| Chino Valley | April 27 | October 24 | 178 days | 8a |
| Show Low | May 5 | October 15 | 162 days | 7a |
| Arizona City | February 28 | November 21 | 266 days | — |
| Sedona | April 1 | November 17 | 229 days | 8b |
| Vail | January 26 | December 16 | 326 days | 9b |
| Gold Camp | January 18 | December 28 | 342 days | 9b |
| Gold Canyon | February 11 | December 10 | 304 days | 9b |
| Safford | March 25 | November 9 | 228 days | 8b |
| Winslow | April 27 | October 18 | 174 days | 7a |
| Picture Rocks | February 23 | December 6 | 287 days | 9b |
| Valencia West | February 8 | December 10 | 303 days | 9a |