Arvin, CA 93303 Frost Dates
Frost dates for Arvin, CA, ZIP 93303
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.
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.
The actual range around Arvin's last frost
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 2,769 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,259 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Arvin's frost date answer different questions, and the frost range explains how to read the range around Arvin's dates instead of trusting one.