Key West, FL: records

4 October 2026: The hottest day on record in Key West, FL: 97°F on Sunday 26 August 1956 and Monday 19 July 1880.

The record begins: 1871

All-time records

The coldest night on record in Key West, FL: a low of 41°F on Tuesday 13 January 1981 and Tuesday 12 January 1886.
The wettest day on record in Key West, FL: 22.75 in on Tuesday 11 November 1980.
The warmest night on record in Key West, FL: a low of 88°F on Wednesday 9 August 2023.
The coldest day on record in Key West, FL: a high of 48°F on Saturday 29 December 1894.

Records by month

Month	Highest	Lowest	Wettest day
January	90°F 16 January 1877	41°F 13 January 1981, 12 January 1886	6.42 in 22 January 1983
February	87°F 25 February 1874	44°F 3 February 1917, 14 February 1899	4.34 in 5 February 2012
March	89°F 1 March 1874, 25 March 1873	47°F 3 March 1986	5.26 in 6 March 1987
April	91°F 27 April 1881	48°F 2 April 1987	6.19 in 12 April 1985
May	94°F 14 May 2019	63°F 8 May 2016, 2 May 1877	7.20 in 30 May 1960
June	96°F 6 June 1881	65°F 2 June 1932	5.14 in 25 June 1992
July	97°F 19 July 1880	68°F 16 July 1888	7.14 in 28 July 1916
August	97°F 26 August 1956	68°F 6 August 1913, 4 August 1894	9.66 in 26 August 2005
September	95°F 14 September 2023, 20 September 2018, 3 September 2007 and 4 more	69°F 17 September 1985, 30 September 1945, 2 September 1898 and 3 more	9.37 in 12 September 2020
October	93°F 5 October 1962	59°F 30 October 1910, 29 October 1892	13.54 in 4 October 1933
November	91°F 3 November 1876	49°F 30 November 1959	22.75 in 11 November 1980
December	88°F 24 December 1876, 23 December 1876	44°F 24 December 1989, 27 December 1985, 29 December 1894 and 1 more	6.66 in 8 December 1986

Streaks, months and years

The longest run of days with a high of 90°F or above in Key West, FL: 75 days, from Friday 14 June to Tuesday 27 August 1957.
The wettest month on record in Key West, FL: November 1980, with 27.67 in of precipitation.
The driest month on record in Key West, FL: April 1959, with 0.00 in of precipitation.
The wettest year on record in Key West, FL: 1969, with 62.92 in of precipitation.
The driest year on record in Key West, FL: 1974, with 19.99 in of precipitation.

Daily records by decade

New daily records set in Key West, FL by decade since the 1900s: the most record highs, 98, came in the 1950s; the most record lows, 87, in the 1910s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1870s	0	0	9
1880s	0	0	10
1890s	0	0	10
1900s	7	67	10
1910s	11	87	10
1920s	29	45	10
1930s	28	38	10
1940s	28	29	10
1950s	98	33	10
1960s	9	20	10
1970s	6	18	10
1980s	12	31	10
1990s	13	22	10
2000s	7	17	10
2010s	12	14	10
2020s	17	3	7

Key West, FL