Key Biscayne, FL 00646 Frost Dates
Frost dates for Key Biscayne, FL, ZIP 00646
The NOAA station nearest to 00646 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
Key Biscayne's growing season runs about 365 days, ranking 1,527 of 40,283 US ZIP codes measured here, longest to shortest. Within FL, it ranks 568 of 1,609.
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local microclimates explains what one yard in Key Biscayne can differ from the 00646 normal, and the methodology explains exactly which NOAA and USDA figures feed 00646's numbers.