Apache Junction, AZ 85120 Frost Dates
Frost dates for Apache Junction, AZ, ZIP 85120
Typically, the last spring freeze lands around 02/01, roughly 157 days out. The first fall frost typically arrives around 12/10, about 312 frost-free days later.
Zone 9b (25 to 30°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 Apache Junction, not a forecast for this year.
What to do before the first frost
Zone 9b around Apache Junction has about 15 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.
The actual range around Apache Junction's last frost
02/01 is the middle of 30 years of NOAA records, not a promise. Plant by 01/01 and you're betting against frost in roughly 9 years out of 10. 02/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Apache Junction compares
About 312 days separate Apache Junction's last and first frost, putting it 3,470 of 40,283 ZIP codes nationally. Within AZ, it ranks 232 of 506.
Learn more
the frost range explains how to read the range around Apache Junction's dates instead of trusting one, and local microclimates explains what one yard in Apache Junction can differ from the 85120 normal.