Key Biscayne, FL 00971 Frost Dates
00971, near Key Biscayne, FL: the frost window
The NOAA station nearest to 00971 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 13a (60 to 65°F average annual minimum).
Key Biscayne against the rest of the dataset
At roughly 365 frost-free days, Key Biscayne places 1,619 of 40,283 ZIP codes in this dataset. Within FL, it ranks 660 of 1,609.
Learn more
Two guides worth reading on 00971: the methodology, on exactly which NOAA and USDA figures feed 00971's numbers, and zone vs. frost date, on why Zone 13a and Key Biscayne's frost date answer different questions.