Key Biscayne, FL 00978 Frost Dates
Frost dates for Key Biscayne, FL, ZIP 00978
The NOAA station nearest to 00978 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).
How Key Biscayne compares
At roughly 365 frost-free days, Key Biscayne places 1,623 of 40,283 ZIP codes in this dataset. Within FL, it ranks 664 of 1,609.
Learn more
the methodology explains exactly which NOAA and USDA figures feed 00978's numbers, and zone vs. frost date explains why Zone 13a and Key Biscayne's frost date answer different questions.