Santa Clara, CA 95112 Frost Dates
95112, near Santa Clara, CA: the frost window
The last spring frost here typically falls around 01/02, about 127 days from today. Fall's first freeze usually shows up around 12/25, roughly 362 days after the last spring frost.
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 Santa Clara, not a forecast for this year.
Stretching the season past the first frost
Santa Clara's growing season runs out in roughly 17 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 01/02 isn't a guarantee
01/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/14 and only about 1 year in 10 sees frost after that.
Santa Clara against the rest of the dataset
At roughly 362 frost-free days, Santa Clara places 2,060 of 40,283 ZIP codes in this dataset. Within CA, it ranks 946 of 2,555.
Learn more
Two guides worth reading on 95112: zone vs. frost date, on why Zone 9b and Santa Clara's frost date answer different questions, and the frost range, on how to read the range around Santa Clara's dates instead of trusting one.