Santa Clara, CA 95050 Frost Dates
Frost dates for Santa Clara, CA, ZIP 95050
Around 01/12 is the usual last spring frost, about 137 days away. The first fall frost typically arrives around 12/22, about 347 frost-free days later.
The USDA Plant Hardiness Zone Map puts Santa Clara in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9b around Santa Clara has about 17 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 Santa Clara's last frost
01/12 is the middle of 30 years of NOAA records, not a promise. Plant by 02/14 and you're betting against frost in roughly 9 years out of 10. 12/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Santa Clara compares
About 347 days separate Santa Clara's last and first frost, putting it 2,383 of 40,283 ZIP codes nationally. Within CA, it ranks 1,070 of 2,555.
Learn more
local microclimates explains what one yard in Santa Clara can differ from the 95050 normal, and zone vs. frost date explains why Zone 9b and Santa Clara's frost date answer different questions.