San Pablo, CA 94805 Frost Dates
94805, near San Pablo, CA: the frost window
The last spring frost here typically falls around 01/04, about 129 days from today. Fall's first freeze usually shows up around 01/02, roughly 365 days after the last spring frost.
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.
Stretching the season past the first frost
San Pablo's growing season runs out in roughly 18 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
01/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/26 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.
San Pablo against the rest of the dataset
San Pablo's growing season runs about 365 days, ranking 1,054 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 464 of 2,555.
Learn more
Two guides worth reading on 94805: the frost range, on how to read the range around San Pablo's dates instead of trusting one, and local microclimates, on what one yard in San Pablo can differ from the 94805 normal.