Hidden Hills, CA 91364 Frost Dates
When can you plant in Hidden Hills, CA?
Typically, the last spring freeze lands around 01/24, roughly 149 days out. The first fall frost typically arrives around 12/15, about 329 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 Hidden Hills, not a forecast for this year.
What to do before the first frost
About 16 weeks of growing season left in Hidden Hills 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
01/24 is the middle of 30 years of NOAA records, not a promise. Plant by 03/05 and you're betting against frost in roughly 9 years out of 10. 12/21 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hidden Hills compares
Hidden Hills's growing season runs about 329 days, ranking 3,132 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,356 of 2,555.
Learn more
the frost range covers how to read the range around Hidden Hills's dates instead of trusting one. local microclimates covers what one yard in Hidden Hills can differ from the 91364 normal.