Avondale, AZ 85358 Frost Dates
Frost dates for Avondale, AZ, ZIP 85358
Typically, the last spring freeze lands around 01/14, roughly 139 days out. The first fall frost typically arrives around 12/22, about 343 frost-free days later.
Avondale 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
Zone 9a around Avondale has about 17 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 01/14 isn't a guarantee
01/14 is the middle of 30 years of NOAA records, not a promise. Plant by 02/12 and you're betting against frost in roughly 9 years out of 10. 12/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Avondale compares
At roughly 343 frost-free days, Avondale places 2,514 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 128 of 506.
Learn more
the frost range explains how to read the range around Avondale's dates instead of trusting one, and local microclimates explains what one yard in Avondale can differ from the 85358 normal.