Paradise Valley, AZ 85256 Frost Dates
When can you plant in Paradise Valley, AZ?
Typically, the last spring freeze lands around 02/13, roughly 169 days out. The first fall frost typically arrives around 12/05, about 298 frost-free days later.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Paradise Valley, not a forecast for this year.
What to do before the first frost
About 14 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.
Why 02/13 isn't a guarantee
02/13 is the middle of 30 years of NOAA records, not a promise. Plant by 01/12 and you're betting against frost in roughly 9 years out of 10. 03/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Paradise Valley compares
About 298 days separate Paradise Valley's last and first frost, putting it 4,205 of 40,283 ZIP codes nationally. Within AZ, it ranks 273 of 506.
Learn more
zone vs. frost date covers why Zone 9b 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.