Lomita, CA 91617 Frost Dates
Frost dates for Lomita, CA, ZIP 91617
The last spring frost here typically falls around 01/09, about 134 days from today. The first fall frost typically arrives around 01/05, about 365 frost-free days later.
Lomita sits in USDA Zone 10a (30 to 35°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
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
Lomita's growing season runs about 365 days, ranking 1,447 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 732 of 2,555.
Learn more
zone vs. frost date explains why Zone 10a and Lomita's frost date answer different questions, and the frost range explains how to read the range around Lomita's dates instead of trusting one.