Costa Mesa, CA 92627 Frost Dates
92627, near Costa Mesa, CA: the frost window
The NOAA station nearest to 92627 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).
Costa Mesa against the rest of the dataset
Costa Mesa's growing season runs about 365 days, ranking 472 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 195 of 2,555.
Learn more
Two guides worth reading on 92627: zone vs. frost date, on why Zone 10b and Costa Mesa's frost date answer different questions, and local microclimates, on what one yard in Costa Mesa can differ from the 92627 normal.