Santa Clarita, CA 91384 Frost Dates
Santa Clarita, CA: when does the frost end?
Typically, the last spring freeze lands around 01/08, roughly 133 days out. Fall's first freeze usually shows up around 01/01, roughly 365 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Santa Clarita in Zone 10a (30 to 35°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 18 weeks until Santa Clarita's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/08 isn't a guarantee
01/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/10 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/08 and only about 1 year in 10 sees frost after that.
Santa Clarita against the rest of the dataset
At roughly 365 frost-free days, Santa Clarita places 346 of 40,283 ZIP codes in this dataset. Within CA, it ranks 109 of 2,555.
Learn more
Before leaning on 91384's figures: zone vs. frost date explains why Zone 10a and Santa Clarita's frost date answer different questions, while the frost range explains how to read the range around Santa Clarita's dates instead of trusting one.