Shafter, CA 93263 Frost Dates
When can you plant in Shafter, CA?
Typically, the last spring freeze lands around 01/31, roughly 156 days out. The first fall frost typically arrives around 12/05, about 315 frost-free days later.
Zone 9a (20 to 25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Shafter, not a forecast for this year.
What to do before the first frost
About 14 weeks of growing season left in Shafter before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/31 isn't a guarantee
01/31 is the middle of 30 years of NOAA records, not a promise. Plant by 01/02 and you're betting against frost in roughly 9 years out of 10. 02/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Shafter compares
About 315 days separate Shafter's last and first frost, putting it 3,418 of 40,283 ZIP codes nationally. Within CA, it ranks 1,427 of 2,555.
Learn more
local microclimates covers what one yard in Shafter can differ from the 93263 normal. zone vs. frost date covers why Zone 9a and Shafter's frost date answer different questions.