Key Biscayne, FL 00921 Frost Dates
When can you plant in Key Biscayne, FL?
The NOAA station nearest to 00921 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
About 365 days separate Key Biscayne's last and first frost, putting it 1,581 of 40,283 ZIP codes nationally. Within FL, it ranks 622 of 1,609.
Learn more
the methodology covers exactly which NOAA and USDA figures feed 00921's numbers. zone vs. frost date covers why Zone 13a and Key Biscayne's frost date answer different questions.