Hayden, AZ 85135 Frost Dates
When can you plant in Hayden, AZ?
Around 03/13 is the usual last spring frost, about 197 days away. The first fall frost typically arrives around 11/19, about 247 frost-free days later.
Zone 9a (20 to 25°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 Hayden, not a forecast for this year.
What to do before the first frost
About 12 weeks of growing season left in Hayden before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
03/13 is the middle of 30 years of NOAA records, not a promise. Plant by 02/17 and you're betting against frost in roughly 9 years out of 10. 04/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hayden compares
At roughly 247 frost-free days, Hayden places 7,873 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 318 of 506.
Learn more
the frost range covers how to read the range around Hayden's dates instead of trusting one. local microclimates covers what one yard in Hayden can differ from the 85135 normal.