All-time weather records — Key Biscayne, FL

Record high
96.1°F
April 27, 2015
Record low
35.1°F
January 10, 2010
Wettest day
8.71 in
June 4, 2022

Climate change signal in Key Biscayne

80.6%

of Key Biscayne's all-time daily heat records were set in the last decade (295 of 366 records since 2015).

17.5%

of all-time daily cold records were set in the last decade (64 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1990s
4
7
2000s
17
208
2010s
207
113
2020s
138
38

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1999, the latest in 2026. Period of observation: 1997-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 87.1°F — Jan 24, 2023 35.1°F — Jan 10, 2010 5.82 in — Jan 24, 1999
February 87.1°F — Feb 4, 2023 35.1°F — Feb 1, 2026 4.22 in — Feb 3, 1998
March 90.0°F — Mar 5, 2019 44.1°F — Mar 4, 2013 3.02 in — Mar 20, 1998
April 96.1°F — Apr 27, 2015 48.9°F — Apr 4, 2005 3.07 in — Apr 9, 2018
May 93.0°F — May 12, 2024 61.0°F — May 10, 2001 4.43 in — May 24, 2001
June 96.1°F — Jun 17, 2023 64.0°F — Jun 27, 2003 8.71 in — Jun 4, 2022
July 96.1°F — Jul 22, 2018 71.1°F — Jul 3, 2008 4.23 in — Jul 6, 2021
August 96.1°F — Aug 8, 2023 71.1°F — Aug 8, 2002 7.00 in — Aug 26, 2005
September 95.0°F — Sep 10, 2012 66.0°F — Sep 6, 2002 4.76 in — Sep 29, 2001
October 93.0°F — Oct 1, 2015 53.1°F — Oct 18, 2002 7.60 in — Oct 4, 2000
November 90.0°F — Nov 1, 2019 45.0°F — Nov 22, 2006 6.52 in — Nov 7, 2003
December 88.0°F — Dec 4, 2018 37.0°F — Dec 14, 2010 4.74 in — Dec 4, 2015

Click a month to see every daily record for that month in Key Biscayne.