Bradbury, CA 91010 Frost Dates
Frost dates for Bradbury, CA, ZIP 91010
The last spring frost here typically falls around 01/04, about 129 days from today. The first fall frost typically arrives around 01/02, about 365 frost-free days later.
The USDA Plant Hardiness Zone Map puts Bradbury in Zone 10a (30 to 35°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 10a around Bradbury has about 18 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 Bradbury's last frost
01/04 is the middle of 30 years of NOAA records, not a promise. Plant by 01/28 and you're betting against frost in roughly 9 years out of 10. 12/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Bradbury compares
Bradbury's growing season runs about 365 days, ranking 1,976 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 899 of 2,555.
Learn more
the frost range explains how to read the range around Bradbury's dates instead of trusting one, and local microclimates explains what one yard in Bradbury can differ from the 91010 normal.