Santa Ana, CA 92703 Frost Dates
Santa Ana, CA: when does the frost end?
The NOAA station nearest to 92703 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).
Santa Ana against the rest of the dataset
Santa Ana's growing season runs about 365 days, ranking 301 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 94 of 2,555.
Learn more
Before leaning on 92703's figures: the methodology explains exactly which NOAA and USDA figures feed 92703's numbers, while zone vs. frost date explains why Zone 10b and Santa Ana's frost date answer different questions.