Sebastopol, CA 94929 Frost Dates
94929, near Sebastopol, CA: the frost window
The last spring frost here typically falls around 01/01, about 126 days from today. Fall's first freeze usually shows up around 12/31, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Sebastopol 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
Sebastopol'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.
Why 01/01 isn't a guarantee
01/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/08 and only about 1 year in 10 sees frost after that.
Sebastopol against the rest of the dataset
About 365 days separate Sebastopol's last and first frost, putting it 1,756 of 40,283 ZIP codes nationally. Within CA, it ranks 858 of 2,555.
Learn more
Two guides worth reading on 94929: local microclimates, on what one yard in Sebastopol can differ from the 94929 normal, and zone vs. frost date, on why Zone 10a and Sebastopol's frost date answer different questions.