Winslow, AZ 86039 Frost Dates
Frost dates for Winslow, AZ, ZIP 86039
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.
The USDA Plant Hardiness Zone Map puts Winslow 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
Zone 7a around Winslow has about 6 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 05/16 isn't a guarantee
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 Winslow compares
Winslow's growing season runs about 147 days, ranking 35,877 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 465 of 506.
Learn more
local microclimates explains what one yard in Winslow can differ from the 86039 normal, and zone vs. frost date explains why Zone 7a and Winslow's frost date answer different questions.