San Leandro, CA 94546 Frost Dates
When can you plant in San Leandro, CA?
The last spring frost here typically falls around 01/02, about 127 days from today. The first fall frost typically arrives around 12/25, about 365 frost-free days later.
Zone 9b (25 to 30°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 San Leandro, not a forecast for this year.
What to do before the first frost
About 17 weeks of growing season left in San Leandro before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 01/02 isn't a guarantee
01/02 is the middle of 30 years of NOAA records, not a promise. Plant by 01/27 and you're betting against frost in roughly 9 years out of 10. 12/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How San Leandro compares
At roughly 365 frost-free days, San Leandro places 606 of 40,283 ZIP codes in this dataset. Within CA, it ranks 276 of 2,555.
Learn more
zone vs. frost date covers why Zone 9b and San Leandro's frost date answer different questions. the frost range covers how to read the range around San Leandro's dates instead of trusting one.