Kingman, AZ 86445 Frost Dates
86445, near Kingman, AZ: the frost window
Around 05/17 is the usual last spring frost, about 262 days away. Fall's first freeze usually shows up around 10/10, roughly 146 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Kingman in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
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.
How much risk comes with planting early here
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
Kingman's growing season runs about 146 days, ranking 36,015 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 475 of 506.
Learn more
Two guides worth reading on 86445: zone vs. frost date, on why Zone 9b and Kingman's frost date answer different questions, and the frost range, on how to read the range around Kingman's dates instead of trusting one.