Stockton, CA 95215 Frost Dates
95215, near Stockton, CA: the frost window
Around 02/06 is the usual last spring frost, about 162 days away. Fall's first freeze usually shows up around 12/01, roughly 304 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Stockton in Zone 9b (25 to 30°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
Stockton's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 02/06 isn't a guarantee
02/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/31 and only about 1 year in 10 sees frost after that.
Stockton against the rest of the dataset
At roughly 304 frost-free days, Stockton places 3,744 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,513 of 2,555.
Learn more
Two guides worth reading on 95215: local microclimates, on what one yard in Stockton can differ from the 95215 normal, and zone vs. frost date, on why Zone 9b and Stockton's frost date answer different questions.