Santa Monica, CA 90405 Frost Dates
90405, near Santa Monica, CA: the frost window
The NOAA station nearest to 90405 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 11a (40 to 45°F average annual minimum).
Santa Monica against the rest of the dataset
About 365 days separate Santa Monica's last and first frost, putting it 588 of 40,283 ZIP codes nationally. Within CA, it ranks 265 of 2,555.
Learn more
Two guides worth reading on 90405: the methodology, on exactly which NOAA and USDA figures feed 90405's numbers, and zone vs. frost date, on why Zone 11a and Santa Monica's frost date answer different questions.