Show Low, AZ 85934 Frost Dates
Frost dates for Show Low, AZ, ZIP 85934
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/15, about 162 frost-free days later.
The USDA Plant Hardiness Zone Map puts Show Low in Zone 6b (-5 to 0°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 6b around Show Low has about 7 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 05/05 isn't a guarantee
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/21 and you're betting against frost in roughly 9 years out of 10. 05/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Show Low compares
Show Low's growing season runs about 162 days, ranking 31,684 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 452 of 506.
Learn more
local microclimates explains what one yard in Show Low can differ from the 85934 normal, and zone vs. frost date explains why Zone 6b and Show Low's frost date answer different questions.