Milpitas, CA 95036 Frost Dates
When can you plant in Milpitas, CA?
The last spring frost here typically falls around 01/12, about 137 days from today. The first fall frost typically arrives around 12/22, about 347 frost-free days later.
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 Milpitas, not a forecast for this year.
What to do before the first frost
About 17 weeks of growing season left in Milpitas before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
01/12 is the middle of 30 years of NOAA records, not a promise. Plant by 02/14 and you're betting against frost in roughly 9 years out of 10. 12/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Milpitas compares
Milpitas's growing season runs about 347 days, ranking 2,387 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,074 of 2,555.
Learn more
zone vs. frost date covers why Zone 10a and Milpitas's frost date answer different questions. the frost range covers how to read the range around Milpitas's dates instead of trusting one.