San Diego, CA 92124 Frost Dates
San Diego, CA: when does the frost end?
The NOAA station nearest to 92124 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 22 of 40,283 ZIP codes in this dataset. Within CA, it ranks 15 of 2,555.
Learn more
Before leaning on 92124's figures: the methodology explains exactly which NOAA and USDA figures feed 92124's numbers, while zone vs. frost date explains why Zone 10b and San Diego's frost date answer different questions.