Tracy, CA 95377 Frost Dates
Frost dates for Tracy, CA, ZIP 95377
The last spring frost here typically falls around 01/19, about 144 days from today. The first fall frost typically arrives around 12/10, about 330 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 Tracy, not a forecast for this year.
What to do before the first frost
Zone 9b around Tracy 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 01/19 isn't a guarantee
01/19 is the middle of 30 years of NOAA records, not a promise. Plant by 02/17 and you're betting against frost in roughly 9 years out of 10. 12/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tracy compares
About 330 days separate Tracy's last and first frost, putting it 2,996 of 40,283 ZIP codes nationally. Within CA, it ranks 1,310 of 2,555.
Learn more
zone vs. frost date explains why Zone 9b and Tracy's frost date answer different questions, and the frost range explains how to read the range around Tracy's dates instead of trusting one.