Parker, AZ 85371 Frost Dates
When can you plant in Parker, AZ?
The last spring frost here typically falls around 01/12, about 137 days from today. The first fall frost typically arrives around 12/19, about 338 frost-free days later.
Parker sits in USDA Zone 9a (20 to 25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a 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.
How much risk comes with planting early here
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 2,636 of 40,283 US ZIP codes measured here, longest to shortest. Within AZ, it ranks 145 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 85371 normal.