Rolling Hills, CA 90732 Frost Dates
Rolling Hills, CA: when does the frost end?
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.
Zone 10b (35 to 40°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 Rolling Hills, not a forecast for this year.
Stretching the season past the first frost
With roughly 19 weeks until Rolling Hills'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.
Rolling Hills against the rest of the dataset
About 365 days separate Rolling Hills's last and first frost, putting it 1,965 of 40,283 ZIP codes nationally. Within CA, it ranks 897 of 2,555.
Learn more
Before leaning on 90732's figures: the frost range explains how to read the range around Rolling Hills's dates instead of trusting one, while local microclimates explains what one yard in Rolling Hills can differ from the 90732 normal.