Honolulu, HI 96728 Frost Dates
96728, near Honolulu, HI: the frost window
The NOAA station nearest to 96728 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 12b (55 to 60°F average annual minimum).
Honolulu against the rest of the dataset
Honolulu's growing season runs about 365 days, ranking 125 of 40,283 US ZIP codes measured here, longest to shortest. Within HI, it ranks 22 of 133.
Learn more
Two guides worth reading on 96728: local microclimates, on what one yard in Honolulu can differ from the 96728 normal, and the methodology, on exactly which NOAA and USDA figures feed 96728's numbers.