San Diego, CA 92122 Frost Dates
92122, near San Diego, CA: the frost window
The NOAA station nearest to 92122 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).
San Diego against the rest of the dataset
San Diego's growing season runs about 365 days, ranking 20 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 13 of 2,555.
Learn more
Two guides worth reading on 92122: the methodology, on exactly which NOAA and USDA figures feed 92122's numbers, and zone vs. frost date, on why Zone 10b and San Diego's frost date answer different questions.