Pico Rivera, CA 90660 Frost Dates
When can you plant in Pico Rivera, CA?
Typically, the last spring freeze lands around 01/04, roughly 129 days out. The first fall frost typically arrives around 01/02, about 365 frost-free days later.
Pico Rivera sits in USDA Zone 10b (35 to 40°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 18 weeks of growing season left in Pico Rivera before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/04 isn't a guarantee
01/04 is the middle of 30 years of NOAA records, not a promise. Plant by 01/28 and you're betting against frost in roughly 9 years out of 10. 12/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Pico Rivera compares
At roughly 365 frost-free days, Pico Rivera places 777 of 40,283 ZIP codes in this dataset. Within CA, it ranks 329 of 2,555.
Learn more
local microclimates covers what one yard in Pico Rivera can differ from the 90660 normal. zone vs. frost date covers why Zone 10b and Pico Rivera's frost date answer different questions.