San Fernando, CA 91326 Frost Dates
San Fernando, CA: when does the frost end?
The last spring frost here typically falls around 01/02, about 127 days from today. Fall's first freeze usually shows up around 01/01, roughly 365 days after the last spring frost.
San Fernando 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 18 weeks until San Fernando's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/02 isn't a guarantee
01/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/10 and only about 1 year in 10 sees frost after that.
San Fernando against the rest of the dataset
San Fernando's growing season runs about 365 days, ranking 1,188 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 509 of 2,555.
Learn more
Before leaning on 91326's figures: local microclimates explains what one yard in San Fernando can differ from the 91326 normal, while zone vs. frost date explains why Zone 10a and San Fernando's frost date answer different questions.