Arvin, CA 93390 Frost Dates
Frost dates for Arvin, CA, ZIP 93390
The last spring frost here typically falls around 01/17, about 142 days from today. The first fall frost typically arrives around 12/15, about 334 frost-free days later.
The USDA Plant Hardiness Zone Map puts Arvin 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
Zone 9b around Arvin has about 16 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.
How much risk comes with planting early here
01/17 is the middle of 30 years of NOAA records, not a promise. Plant by 02/18 and you're betting against frost in roughly 9 years out of 10. 12/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Arvin compares
About 334 days separate Arvin's last and first frost, putting it 2,778 of 40,283 ZIP codes nationally. Within CA, it ranks 1,268 of 2,555.
Learn more
local microclimates explains what one yard in Arvin can differ from the 93390 normal, and zone vs. frost date explains why Zone 9b and Arvin's frost date answer different questions.