Avondale, AZ 85046 Frost Dates
When can you plant in Avondale, AZ?
Around 01/14 is the usual last spring frost, about 139 days away. The first fall frost typically arrives around 12/22, about 343 frost-free days later.
The USDA Plant Hardiness Zone Map puts Avondale 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 17 weeks of growing season left in Avondale before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
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
About 343 days separate Avondale's last and first frost, putting it 2,474 of 40,283 ZIP codes nationally. Within AZ, it ranks 88 of 506.
Learn more
zone vs. frost date covers why Zone 9b and Avondale's frost date answer different questions. the frost range covers how to read the range around Avondale's dates instead of trusting one.