Gustine, CA 95322 Frost Dates
Frost dates for Gustine, CA, ZIP 95322
Typically, the last spring freeze lands around 02/26, roughly 182 days out. The first fall frost typically arrives around 11/29, about 273 frost-free days later.
Zone 9b (25 to 30°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 Gustine, not a forecast for this year.
What to do before the first frost
Zone 9b around Gustine has about 13 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 Gustine's last frost
02/26 is the middle of 30 years of NOAA records, not a promise. Plant by 01/18 and you're betting against frost in roughly 9 years out of 10. 04/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gustine compares
About 273 days separate Gustine's last and first frost, putting it 5,206 of 40,283 ZIP codes nationally. Within CA, it ranks 1,835 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Gustine's frost date answer different questions, and the frost range explains how to read the range around Gustine's dates instead of trusting one.