Holbrook, AZ 86520 Frost Dates
When can you plant in Holbrook, AZ?
The last spring frost here typically falls around 05/16, about 261 days from today. The first fall frost typically arrives around 10/10, about 147 frost-free days later.
Holbrook sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 6 weeks of growing season left in Holbrook before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Holbrook's last frost
05/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/29 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Holbrook compares
At roughly 147 frost-free days, Holbrook places 35,898 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 470 of 506.
Learn more
local microclimates covers what one yard in Holbrook can differ from the 86520 normal. zone vs. frost date covers why Zone 7a and Holbrook's frost date answer different questions.