Clarkdale, AZ 86324 Frost Dates
86324, near Clarkdale, AZ: the frost window
Around 03/30 is the usual last spring frost, about 214 days away. Fall's first freeze usually shows up around 11/10, roughly 223 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Clarkdale in Zone 8b (15 to 20°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
Clarkdale's growing season runs out in roughly 11 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 Clarkdale's last frost
03/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Clarkdale against the rest of the dataset
At roughly 223 frost-free days, Clarkdale places 12,058 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 345 of 506.
Learn more
Two guides worth reading on 86324: the frost range, on how to read the range around Clarkdale's dates instead of trusting one, and local microclimates, on what one yard in Clarkdale can differ from the 86324 normal.