Honolulu, HI 96720 Frost Dates
96720, near Honolulu, HI: the frost window
The NOAA station nearest to 96720 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).
Honolulu against the rest of the dataset
Honolulu's growing season runs about 365 days, ranking 120 of 40,283 US ZIP codes measured here, longest to shortest. Within HI, it ranks 17 of 133.
Learn more
Two guides worth reading on 96720: local microclimates, on what one yard in Honolulu can differ from the 96720 normal, and the methodology, on exactly which NOAA and USDA figures feed 96720's numbers.