Lomita, CA 90083 Frost Dates
When can you plant in Lomita, CA?
Around 01/09 is the usual last spring frost, about 134 days away. The first fall frost typically arrives around 01/05, about 365 frost-free days later.
Lomita 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 19 weeks of growing season left in Lomita before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/09 isn't a guarantee
01/09 is the middle of 30 years of NOAA records, not a promise. Plant by 02/24 and you're betting against frost in roughly 9 years out of 10. 12/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Lomita compares
At roughly 365 frost-free days, Lomita places 1,282 of 40,283 ZIP codes in this dataset. Within CA, it ranks 567 of 2,555.
Learn more
local microclimates covers what one yard in Lomita can differ from the 90083 normal. zone vs. frost date covers why Zone 10b and Lomita's frost date answer different questions.