Hidden Hills, CA 91304 Frost Dates
Frost dates for Hidden Hills, CA, ZIP 91304
The last spring frost here typically falls around 01/24, about 149 days from today. The first fall frost typically arrives around 12/15, about 329 frost-free days later.
Hidden Hills 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.
What to do before the first frost
Zone 10a around Hidden Hills has about 16 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Hidden Hills's last frost
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
At roughly 329 frost-free days, Hidden Hills places 3,127 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,351 of 2,555.
Learn more
zone vs. frost date explains why Zone 10a and Hidden Hills's frost date answer different questions, and the frost range explains how to read the range around Hidden Hills's dates instead of trusting one.