San Diego, CA 92108 Frost Dates
92108, near San Diego, CA: the frost window
The NOAA station nearest to 92108 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
At roughly 365 frost-free days, San Diego places 14 of 40,283 ZIP codes in this dataset. Within CA, it ranks 7 of 2,555.
Learn more
Two guides worth reading on 92108: the methodology, on exactly which NOAA and USDA figures feed 92108's numbers, and zone vs. frost date, on why Zone 10b and San Diego's frost date answer different questions.