arizona frost dates, county by county.

Apache County

Last spring: 05-07 · First fall: 10-17

Cochise County

Last spring: 03-27 · First fall: 11-13

Coconino County

Last spring: 04-26 · First fall: 11-02

Gila County

Last spring: 01-14 · First fall: 01-10

Graham County

Last spring: 03-13 · First fall: 11-16

Greenlee County

Last spring: 02-05 · First fall: 12-05

La Paz County

Last spring: 01-07 · First fall: 12-21

Maricopa County

Last spring: 01-05 · First fall: 01-04

Mohave County

Last spring: 02-16 · First fall: 12-09

Navajo County

Last spring: 05-01 · First fall: 10-20

Pima County

Last spring: 04-07 · First fall: 11-17

Pinal County

Last spring: 01-08 · First fall: 12-26

Santa Cruz County

Last spring: 02-23 · First fall: 11-30

Yavapai County

Last spring: 04-01 · First fall: 11-08

Yuma County

Last spring: 01-23 · First fall: 12-11