Whittier, CA 90602 Frost Dates
Whittier, CA: when does the frost end?
The NOAA station nearest to 90602 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 10b (35 to 40°F average annual minimum).
Whittier against the rest of the dataset
At roughly 365 frost-free days, Whittier places 650 of 40,283 ZIP codes in this dataset. Within CA, it ranks 281 of 2,555.
Learn more
Before leaning on 90602's figures: zone vs. frost date explains why Zone 10b and Whittier's frost date answer different questions, while local microclimates explains what one yard in Whittier can differ from the 90602 normal.