Piedmont, CA 94617 Frost Dates
Piedmont, CA: when does the frost end?
The NOAA station nearest to 94617 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).
Piedmont against the rest of the dataset
Piedmont's growing season runs about 365 days, ranking 1,724 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 845 of 2,555.
Learn more
Before leaning on 94617's figures: local microclimates explains what one yard in Piedmont can differ from the 94617 normal, while the methodology explains exactly which NOAA and USDA figures feed 94617's numbers.