Fresno, CA 93704 Frost Dates
Frost dates for Fresno, CA, ZIP 93704
Typically, the last spring freeze lands around 01/14, roughly 139 days out. The first fall frost typically arrives around 12/14, about 337 frost-free days later.
Fresno sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a 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.
Why 01/14 isn't a guarantee
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
About 337 days separate Fresno's last and first frost, putting it 2,643 of 40,283 ZIP codes nationally. Within CA, it ranks 1,166 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.