Parker, AZ 85344 Frost Dates
When can you plant in Parker, AZ?
Typically, the last spring freeze lands around 01/12, roughly 137 days out. The first fall frost typically arrives around 12/19, about 338 frost-free days later.
The USDA Plant Hardiness Zone Map puts Parker in Zone 9b (25 to 30°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 16 weeks of growing season left in Parker before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/12 isn't a guarantee
01/12 is the middle of 30 years of NOAA records, not a promise. Plant by 02/15 and you're betting against frost in roughly 9 years out of 10. 12/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Parker compares
Parker's growing season runs about 338 days, ranking 2,635 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 144 of 506.
Learn more
the frost range covers how to read the range around Parker's dates instead of trusting one. local microclimates covers what one yard in Parker can differ from the 85344 normal.