Holbrook, AZ 86025 Frost Dates
When can you plant in Holbrook, AZ?
The last spring frost here typically falls around 04/22, about 237 days from today. The first fall frost typically arrives around 10/24, about 184 frost-free days later.
The USDA Plant Hardiness Zone Map puts Holbrook in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 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.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Holbrook compares
Holbrook's growing season runs about 184 days, ranking 23,508 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 424 of 506.
Learn more
zone vs. frost date covers why Zone 7a and Holbrook's frost date answer different questions. the frost range covers how to read the range around Holbrook's dates instead of trusting one.