Lomita, CA 91327 Frost Dates
Frost dates for Lomita, CA, ZIP 91327
Typically, the last spring freeze lands around 01/09, roughly 134 days out. The first fall frost typically arrives around 01/05, about 365 frost-free days later.
Zone 10a (30 to 35°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 Lomita, not a forecast for this year.
What to do before the first frost
Zone 10a around Lomita has about 19 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Lomita's last frost
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
About 365 days separate Lomita's last and first frost, putting it 1,395 of 40,283 ZIP codes nationally. Within CA, it ranks 680 of 2,555.
Learn more
local microclimates explains what one yard in Lomita can differ from the 91327 normal, and zone vs. frost date explains why Zone 10a and Lomita's frost date answer different questions.