Patterson, CA 95387 Frost Dates
When can you plant in Patterson, CA?
The last spring frost here typically falls around 01/31, about 156 days from today. The first fall frost typically arrives around 12/05, about 312 frost-free days later.
Zone 9b (25 to 30°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 Patterson, not a forecast for this year.
What to do before the first frost
About 14 weeks of growing season left in Patterson before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Patterson's last frost
01/31 is the middle of 30 years of NOAA records, not a promise. Plant by 02/25 and you're betting against frost in roughly 9 years out of 10. 12/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Patterson compares
About 312 days separate Patterson's last and first frost, putting it 3,483 of 40,283 ZIP codes nationally. Within CA, it ranks 1,455 of 2,555.
Learn more
zone vs. frost date covers why Zone 9b and Patterson's frost date answer different questions. the frost range covers how to read the range around Patterson's dates instead of trusting one.