Apache Junction, AZ 85118 Frost Dates
Apache Junction, AZ: when does the frost end?
Typically, the last spring freeze lands around 02/11, roughly 167 days out. Fall's first freeze usually shows up around 12/10, roughly 304 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Apache Junction in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 15 weeks until Apache Junction's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Apache Junction's last frost
02/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 03/07 and only about 1 year in 10 sees frost after that.
Apache Junction against the rest of the dataset
Apache Junction's growing season runs about 304 days, ranking 3,750 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 251 of 506.
Learn more
Before leaning on 85118's figures: local microclimates explains what one yard in Apache Junction can differ from the 85118 normal, while zone vs. frost date explains why Zone 9b and Apache Junction's frost date answer different questions.