Agoura Hills, CA 91301 Frost Dates
Frost dates for Agoura Hills, CA, ZIP 91301
Around 01/24 is the usual last spring frost, about 149 days away. The first fall frost typically arrives around 12/15, about 329 frost-free days later.
Zone 10b (35 to 40°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 Agoura Hills, not a forecast for this year.
What to do before the first frost
Zone 10b around Agoura 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.
Why 01/24 isn't a guarantee
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 Agoura Hills compares
At roughly 329 frost-free days, Agoura Hills places 3,093 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,345 of 2,555.
Learn more
the frost range explains how to read the range around Agoura Hills's dates instead of trusting one, and local microclimates explains what one yard in Agoura Hills can differ from the 91301 normal.