Brea, CA 92821 Frost Dates
When can you plant in Brea, CA?
The NOAA station nearest to 92821 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 10a (30 to 35°F average annual minimum).
How Brea compares
At roughly 365 frost-free days, Brea places 901 of 40,283 ZIP codes in this dataset. Within CA, it ranks 367 of 2,555.
Learn more
local microclimates covers what one yard in Brea can differ from the 92821 normal. the methodology covers exactly which NOAA and USDA figures feed 92821's numbers.