Dos Palos, CA 93620 Frost Dates
Frost dates for Dos Palos, CA, ZIP 93620
Typically, the last spring freeze lands around 01/26, roughly 151 days out. The first fall frost typically arrives around 12/10, about 322 frost-free days later.
Zone 9a (20 to 25°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 Dos Palos, not a forecast for this year.
What to do before the first frost
Zone 9a around Dos Palos has about 15 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 01/26 isn't a guarantee
01/26 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. 12/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dos Palos compares
At roughly 322 frost-free days, Dos Palos places 3,283 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,398 of 2,555.
Learn more
the frost range explains how to read the range around Dos Palos's dates instead of trusting one, and local microclimates explains what one yard in Dos Palos can differ from the 93620 normal.