Fresno, CA 93726 Frost Dates
Frost dates for Fresno, CA, ZIP 93726
Around 01/14 is the usual last spring frost, about 139 days away. The first fall frost typically arrives around 12/14, about 337 frost-free days later.
The USDA Plant Hardiness Zone Map puts Fresno 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 Fresno 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.
The actual range around Fresno's last frost
01/14 is the middle of 30 years of NOAA records, not a promise. Plant by 02/11 and you're betting against frost in roughly 9 years out of 10. 12/22 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Fresno compares
Fresno's growing season runs about 337 days, ranking 2,650 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,173 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Fresno's frost date answer different questions, and the frost range explains how to read the range around Fresno's dates instead of trusting one.