Lomita, CA 90510 Frost Dates
Lomita, CA: when does the frost end?
Typically, the last spring freeze lands around 01/09, roughly 134 days out. Fall's first freeze usually shows up around 01/05, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lomita in Zone 10b (35 to 40°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 19 weeks until Lomita's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/09 isn't a guarantee
01/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/24 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/04 and only about 1 year in 10 sees frost after that.
Lomita against the rest of the dataset
Lomita's growing season runs about 365 days, ranking 1,324 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 609 of 2,555.
Learn more
Before leaning on 90510's figures: zone vs. frost date explains why Zone 10b and Lomita's frost date answer different questions, while the frost range explains how to read the range around Lomita's dates instead of trusting one.