Paradise Valley, AZ 85018 Frost Dates
When can you plant in Paradise Valley, AZ?
Typically, the last spring freeze lands around 01/05, roughly 130 days out. The first fall frost typically arrives around 01/03, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts Paradise Valley in Zone 10a (30 to 35°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 18 weeks of growing season left in Paradise Valley before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Paradise Valley's last frost
01/05 is the middle of 30 years of NOAA records, not a promise. Plant by 01/22 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 Paradise Valley compares
About 365 days separate Paradise Valley's last and first frost, putting it 1,696 of 40,283 ZIP codes nationally. Within AZ, it ranks 20 of 506.
Learn more
zone vs. frost date covers why Zone 10a and Paradise Valley's frost date answer different questions. the frost range covers how to read the range around Paradise Valley's dates instead of trusting one.