Arvin, CA 93581 Frost Dates
Frost dates for Arvin, CA, ZIP 93581
Around 01/17 is the usual last spring frost, about 142 days away. The first fall frost typically arrives around 12/15, about 334 frost-free days later.
Zone 8b (15 to 20°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 Arvin, not a forecast for this year.
What to do before the first frost
Zone 8b 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.
Why 01/17 isn't a guarantee
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
Arvin's growing season runs about 334 days, ranking 2,781 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,271 of 2,555.
Learn more
local microclimates explains what one yard in Arvin can differ from the 93581 normal, and zone vs. frost date explains why Zone 8b and Arvin's frost date answer different questions.