Visalia, CA 93227 Frost Dates
Frost dates for Visalia, CA, ZIP 93227
Typically, the last spring freeze lands around 01/23, roughly 148 days out. The first fall frost typically arrives around 12/13, about 328 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 Visalia, not a forecast for this year.
What to do before the first frost
Zone 9b around Visalia 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
01/23 is the middle of 30 years of NOAA records, not a promise. Plant by 02/27 and you're betting against frost in roughly 9 years out of 10. 12/29 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Visalia compares
About 328 days separate Visalia's last and first frost, putting it 3,172 of 40,283 ZIP codes nationally. Within CA, it ranks 1,358 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Visalia's frost date answer different questions, and the frost range explains how to read the range around Visalia's dates instead of trusting one.