Kingman, AZ 86405 Frost Dates
86405, near Kingman, AZ: the frost window
Typically, the last spring freeze lands around 05/17, roughly 262 days out. Fall's first freeze usually shows up around 10/10, roughly 146 days after the last spring frost.
Zone 10a (30 to 35°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Kingman, not a forecast for this year.
Stretching the season past the first frost
Kingman's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Kingman's last frost
05/17 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 05/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/04 and only about 1 year in 10 sees frost after that.
Kingman against the rest of the dataset
About 146 days separate Kingman's last and first frost, putting it 36,011 of 40,283 ZIP codes nationally. Within AZ, it ranks 471 of 506.
Learn more
Two guides worth reading on 86405: local microclimates, on what one yard in Kingman can differ from the 86405 normal, and zone vs. frost date, on why Zone 10a and Kingman's frost date answer different questions.