Berkeley, CA 94704 Frost Dates
Berkeley, CA: when does the frost end?
The last spring frost here typically falls around 01/03, about 128 days from today. Fall's first freeze usually shows up around 01/01, roughly 365 days after the last spring frost.
Zone 10a (30 to 35°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 Berkeley, not a forecast for this year.
Stretching the season past the first frost
With roughly 18 weeks until Berkeley's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
01/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/14 and only about 1 year in 10 sees frost after that.
Berkeley against the rest of the dataset
At roughly 365 frost-free days, Berkeley places 434 of 40,283 ZIP codes in this dataset. Within CA, it ranks 172 of 2,555.
Learn more
Before leaning on 94704's figures: local microclimates explains what one yard in Berkeley can differ from the 94704 normal, while zone vs. frost date explains why Zone 10a and Berkeley's frost date answer different questions.