FrostDateCheck

Lomita, CA 91041 Frost Dates

Lomita, CA: when does the frost end?

Zone 10a

Around 01/09 is the usual last spring frost, about 134 days away. Fall's first freeze usually shows up around 01/05, roughly 365 days after the last spring frost.

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.

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

At roughly 365 frost-free days, Lomita places 1,360 of 40,283 ZIP codes in this dataset. Within CA, it ranks 645 of 2,555.

Learn more

Before leaning on 91041's figures: the frost range explains how to read the range around Lomita's dates instead of trusting one, while local microclimates explains what one yard in Lomita can differ from the 91041 normal.