Delano, CA 93256 Frost Dates
Frost dates for Delano, CA, ZIP 93256
Around 01/31 is the usual last spring frost, about 156 days away. The first fall frost typically arrives around 12/08, about 309 frost-free days later.
The USDA Plant Hardiness Zone Map puts Delano in Zone 9a (20 to 25°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 9a around Delano 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.
How much risk comes with planting early here
01/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 12/30 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Delano compares
About 309 days separate Delano's last and first frost, putting it 3,638 of 40,283 ZIP codes nationally. Within CA, it ranks 1,489 of 2,555.
Learn more
zone vs. frost date explains why Zone 9a and Delano's frost date answer different questions, and the frost range explains how to read the range around Delano's dates instead of trusting one.