Weather · Key Biscayne
Key Biscayne forecast & conditions
Current conditions, the 7-day outlook and hour-by-hour details for Key Biscayne, straight from the National Weather Service. Watches and warnings show up first.
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Climate · a normal year
What a year in Key Biscayne feels like
Key Biscayne has warm winters and warm summers, with plenty of rain. A typical July afternoon reaches 89°, a January night drops to 62°, and snow is almost unheard of.
77° / 63°Winter
82° / 70°Spring
89° / 77°Summer
85° / 74°Fall
How much snow does Key Biscayne get?Almost none.Rain & snow →Does it ever freeze?In about 0% of years.Frost →Is it warmer than it used to be?+2.0° vs. the 20th century.Then & now →
See Key Biscayne’s full climate →
NOAA U.S. Climate Normals, 1991–2020. A normal is a 30-year average, not a forecast.
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Data from the U.S. National Weather Service (weather.gov) — free public data, not modified by TownTapestry. Not a substitute for official warnings; always follow weather.gov and local authorities.