San Pablo, CA 94806 Frost Dates
Frost dates for San Pablo, CA, ZIP 94806
The last spring frost here typically falls around 01/04, about 129 days from today. The first fall frost typically arrives around 01/02, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts San Pablo in Zone 10a (30 to 35°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 10a around San Pablo has about 18 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 01/04 isn't a guarantee
01/04 is the middle of 30 years of NOAA records, not a promise. Plant by 01/26 and you're betting against frost in roughly 9 years out of 10. 12/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How San Pablo compares
About 365 days separate San Pablo's last and first frost, putting it 1,055 of 40,283 ZIP codes nationally. Within CA, it ranks 465 of 2,555.
Learn more
the frost range explains how to read the range around San Pablo's dates instead of trusting one, and local microclimates explains what one yard in San Pablo can differ from the 94806 normal.