Guadalupe, AZ 85042 Frost Dates
When can you plant in Guadalupe, AZ?
Typically, the last spring freeze lands around 01/21, roughly 146 days out. The first fall frost typically arrives around 12/16, about 331 frost-free days later.
Guadalupe sits in USDA Zone 10a (30 to 35°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 Guadalupe before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/21 isn't a guarantee
01/21 is the middle of 30 years of NOAA records, not a promise. Plant by 02/20 and you're betting against frost in roughly 9 years out of 10. 12/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Guadalupe compares
At roughly 331 frost-free days, Guadalupe places 2,955 of 40,283 ZIP codes in this dataset. Within AZ, it ranks 184 of 506.
Learn more
zone vs. frost date covers why Zone 10a and Guadalupe's frost date answer different questions. the frost range covers how to read the range around Guadalupe's dates instead of trusting one.