FrostDateCheck

Stockton, CA 95212 Frost Dates

When can you plant in Stockton, CA?

Zone 9b

Around 02/05 is the usual last spring frost, about 161 days away. The first fall frost typically arrives around 12/08, about 305 frost-free days later.

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.

What to do before the first frost

About 15 weeks of growing season left in Stockton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

How much risk comes with planting early here

02/05 is the middle of 30 years of NOAA records, not a promise. Plant by 03/11 and you're betting against frost in roughly 9 years out of 10. 12/27 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Stockton compares

At roughly 305 frost-free days, Stockton places 3,724 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,509 of 2,555.

Learn more

zone vs. frost date covers why Zone 9b and Stockton's frost date answer different questions. the frost range covers how to read the range around Stockton's dates instead of trusting one.