Key West, FL: December

31 December 2025: December 2025 averaged 74.2°F in Key West, FL, the warmest December since 2021, 21st warmest of 153.

December 2025

Mean temperature: 74.2°F; Warmest since 2021; 21st warmest of 153
Precipitation: 0.97 in; Driest since 2012; 63rd driest of 155

A normal December in Key West, FL (1991 to 2020): a mean temperature of 72.8°F, between 69.8°F and 75.4°F in eight years of ten and 1.53 in of precipitation, between 0.56 in and 4.53 in in eight years of ten.

The mean temperature of every December in Key West, FL since 1873: 74.2°F in 2025; the highest is 77.6°F, in 2015.

Normal range, 69.8 to 75.4°F

Every year, ranked, as a table

Every December in Key West, FL from 1871 to 2025, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2025	74.2	21	78.8	18	69.7	24	0.97	92	0
2024	71.7	70	76.2	71	67.3	71	3.33	31	0
2023	72	65	76.5	63	67.6	62	5.88	6	0
2022	73.5	34	78.2	26	68.8	41	4.18	19	0
2021	75.5	8	79.9	8	71.1	10	1.01	91	0
2020	70	106	74.9	103	65.2	111	1.45	72	0
2019	75.3	11	79.7	9	70.9	11	7.71	3	0
2018	75.4	10	79.6	11	71.2	9	1.90	57	0
2017	72.7	50	78	35	67.5	67	1.28	78	0
2016	77.5	2	81.7	1	73.2	2	1.74	61	0
2015	77.6	1	80.6	4	74.6	1	4.58	11	0
2014	72.8	48	77.4	51	68.1	52	2.25	44	0
2013	75.7	7	79.4	13	72.1	5	1.09	86	0
2012	73.4	35	77.9	37	68.8	41	0.67	115	0
2011	73.9	23	78	35	69.8	23	0.40	131	0
2010	63.1	153	68.3	154	58	153	0.58	122	0
2009	73.4	35	77.6	45	69.2	30	4.49	14	0
2008	71.3	81	76.2	71	66.4	86	0.89	97	0
2007	74.8	16	79.7	9	69.9	21	0.80	103	0
2006	74.3	20	77.9	37	70.7	12	4.82	10	0
2005	70.3	104	75.5	90	65.1	112	0.05	155	0
2004	70.8	91	75.9	83	65.7	103	0.75	108	0
2003	68.5	131	73.3	132	63.6	131	1.03	90	0
2002	71.2	85	76.2	71	66.3	89	4.06	20	0
2001	73.8	27	78.1	32	69.6	25	3.56	28	0
2000	69.9	109	74	120	65.8	98	1.96	53	0
1999	72.1	63	77	58	67.2	75	0.65	118	0
1998	75	14	79.3	16	70.7	12	1.60	69	0
1997	70.6	96	75.2	97	66	97	4.41	17	0
1996	72.5	54	77.6	45	67.4	70	1.44	73	0
1995	69.1	122	74.1	116	64.2	121	2.93	38	0
1994	73.7	28	78.2	26	69.3	29	4.52	12	0
1993	70.8	91	76.4	68	65.3	108	2.22	45	0
1992	72.8	48	77.8	39	67.8	58	0.08	153	0
1991	72.9	46	77.7	42	68.1	52	0.72	109	0
1990	74.6	17	78.8	18	70.3	17	1.32	76	0
1989	67.2	142	73.5	128	61	148	1.67	66	0
1988	71.4	76	76.7	61	66.1	93	0.19	146	0
1987	71.5	75	76.4	68	66.6	81	2.76	40	0
1986	74.9	15	79.3	16	70.6	14	11.18	1	0
1985	69	124	74.2	114	63.7	130	2.28	41	0
1984	74	22	78.2	26	69.9	21	0.10	151	0
1983	72.7	50	77.4	51	67.9	56	4.97	8	0
1982	73.3	41	77.3	54	69.4	28	0.30	139	0
1981	70.5	99	75.2	97	65.8	98	0.07	154	0
1980	68.5	131	73.1	135	63.9	127	0.47	126	0
1979	72.3	61	76.5	63	68.2	49	1.21	80	0
1978	76.1	5	80.5	5	71.7	6	0.43	128	0
1977	69.4	115	74	120	64.7	117	4.43	16	0
1976	70.9	89	75.9	83	65.8	98	1.91	56	0
1975	71.4	76	76.2	71	66.6	81	1.90	57	0
1974	72	65	76.6	62	67.5	67	0.33	138	0
1973	70.4	101	75.1	100	65.7	103	3.24	34	0
1972	73.6	31	78.3	25	68.9	37	3.16	35	0
1971	76.2	4	80	7	72.4	4	1.59	70	0
1970	72.4	58	77.2	56	67.6	62	0.36	133	0
1969	69.2	119	74.1	116	64.2	121	0.78	105	0
1968	69	124	73.2	133	64.7	117	0.18	147	0
1967	74.4	19	78.6	21	70.2	18	4.00	22	0
1966	69.6	113	74.2	114	65	113	1.35	75	0
1965	71.9	69	76.5	63	67.3	71	1.05	89	0
1964	73.9	23	78.2	26	69.5	27	3.59	27	0
1963	66.6	147	71.1	147	62.2	141	1.36	74	0
1962	67.2	142	72.3	139	62.1	143	3.65	26	0
1961	72.5	54	77.3	54	67.7	60	0.78	105	0
1960	67.5	141	72.3	139	62.7	139	0.93	95	0
1959	68.8	127	73.5	128	64.1	124	4.84	9	0
1958	71.1	86	75.6	88	66.5	83	3.90	24	0
1957	68.8	127	75.2	97	62.2	141	1.26	79	1
1956	73.4	35	79.4	13	67.5	67	0.15	149	0
1955	71.3	81	76.2	71	66.4	86	1.09	86	0
1954	68.4	133	74.7	107	62.1	143	0.81	101	0
1953	72.4	58	78.1	32	66.7	80	0.54	124	0
1952	69.2	119	75	102	63.4	134	0.67	115	0
1951	75.5	8	80.9	2	70.2	18	1.12	84	0
1950	68.9	126	74.9	103	62.9	138	1.95	54	0
1949	72.7	50	77	58	68.4	46	1.99	51	0
1948	76	6	80.5	5	71.6	7	3.05	36	0
1947	73.2	43	78.1	32	68.2	49	0.46	127	0
1946	74.5	18	78.6	21	70.5	16	1.31	77	0
1945	70.4	101	76	81	64.8	116	1.19	82	0
1944	68	137	72.5	138	63.5	132	1.88	59	0
1943	69.9	109	74.5	111	65.3	108	0.49	125	0
1942	73.4	35	77.8	39	69.1	33	0.79	104	0
1941	75.1	13	79.6	11	70.6	14	3.46	29	0
1940	73.9	23	78.8	18	68.9	37	6.25	4	0
1939	69.4	115	75.5	90	63.4	134	3.70	25	0
1938	70	106	75.1	100	65	113	0.26	144	0
1937	68.6	130	73.4	131	63.9	127	0.82	100	0
1936	73.2	43	78.2	26	68.2	49	1.67	66	0
1935	65.7	150	71.1	147	60.3	151	0.95	94	0
1934	71	88	76.5	63	65.5	106	0.41	130	0
1933	72.4	58	77.1	57	67.6	62	0.37	132	0
1932	73.3	41	77.6	45	69	35	0.43	128	0
1931	76.6	3	80.7	3	72.6	3	4.04	21	0
1930	67.1	144	72.3	139	62	145	4.26	18	0
1929	69.9	109	74.6	109	65.3	108	3.96	23	0
1928	69.4	115	74.7	107	64	126	2.26	42	0
1927	70.6	96	75.5	90	65.6	105	0.78	105	0
1926	73.6	31	78.5	23	68.7	43	0.65	118	0
1925	71.1	86	76.2	71	66.1	93	1.72	62	0
1924	73.7	28	78.2	26	69.2	30	0.56	123	0
1923	72.9	46	77.8	39	68	55	0.35	135	0
1922	73.7	28	78.4	24	69	35	3.02	37	0
1921	73.4	35	77.6	45	69.2	30	0.35	135	0
1920	70.6	96	75.3	94	65.8	98	0.92	96	0
1919	72	65	76.4	68	67.7	60	1.10	85	0
1918	71.7	70	76.2	71	67.2	75	2.11	49	0
1917	66.3	148	71.1	147	61.6	147	0.14	150	0
1916	71.7	70	76.9	60	66.5	83	0.10	151	0
1915	68.4	133	73.2	133	63.5	132	2.14	47	0
1914	71.4	76	75.6	88	67.1	77	6.17	5	0
1913	71.3	81	76.1	79	66.4	86	0.29	140	0
1912	73.6	31	77.5	49	69.6	25	2.26	42	0
1911	72.5	54	76.1	79	68.9	37	0.62	121	0
1910	65.4	151	70.5	151	60.2	152	0.18	147	0
1909	69.1	122	74.1	116	64.2	121	1.61	68	0
1908	72.5	54	77.4	51	67.6	62	0.70	113	0
1907	70.7	94	75.3	94	66.2	90	1.80	60	0
1906	69.2	119	73.9	125	64.4	120	0.29	140	0
1905	70	106	74	120	66.1	93	10.03	2	0
1904	69.5	114	74	120	65	113	0.34	137	0
1903	65.9	149	70	152	61.8	146	0.71	111	0
1902	70.4	101	73.9	125	67	79	2.12	48	0
1901	67.6	140	71.8	144	63.4	134	5.17	7	0
1900	71.4	76	74.9	103	67.9	56	0.69	114	0
1899	70.9	89	74.6	109	67.3	71	1.53	71	0
1898	70.5	99	74.8	106	66.2	90	3.25	33	0
1897	72.3	61	75.8	85	68.9	37	2.07	50	0
1896	70.3	104	74.1	116	66.5	83	2.21	46	0
1895	67.8	139	71.5	146	64.1	124	0.81	101	0
1894	69.4	115	72.8	136	66.1	93	0.26	144	0
1893	70.8	91	74.4	112	67.3	71	1.18	83	0
1892	71.3	81	75.4	93	67.1	77	0.86	98	0
1891	72.6	53	76.5	63	68.7	43	1.21	80	0
1890	68.1	135	71.7	145	64.6	119	0.36	133	0
1889	71.4	76	74.4	112	68.4	46	0.28	142	0
1888	66.9	145	71.1	147	62.6	140	4.46	15	0
1887	71.7	70	75.7	87	67.6	62	2.79	39	0
1886	68.1	135	72.8	136	63.4	134	0.83	99	0
1885	65.1	152	69.3	153	61	148	1.72	62	0
1884	73.9	23	77.7	42	70	20	1.68	65	0
1883	72.1	63	76	81	68.3	48	0.97	92	0
1882	69.7	112	73.6	127	65.8	98	1.92	55	0
1881	73.4	35	77.7	42	69.1	33	1.97	52	0
1880	70.7	94	75.8	85	66.2	90	0.71	111	2
1879	75.3	11	79.4	13	71.3	8	4.50	13	0
1878	68	137	72.2	142	63.9	127	1.06	88	0
1877	68.8	127	72.1	143	65.4	107	1.69	64	2
1876	66.9	145	73.5	128	60.4	150	0.72	109	0
1875	73.1	45	77.5	49	68.7	43	0.66	117	0
1874	72	65	76.2	71	67.8	58	0.27	143	0
1873	71.7	70	75.3	94	68.1	52	3.42	30	0
1872			74	120			0.65	118	30
1871							3.32	32	31

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	77.6
2016	77.5
1931	76.6
1971	76.2
1978	76.1
1948	76
2013	75.7
2021	75.5
1951	75.5
2018	75.4

Coldest
Year	Mean, °F
2010	63.1
1885	65.1
1910	65.4
1935	65.7
1903	65.9
1917	66.3
1963	66.6
1888	66.9
1876	66.9
1930	67.1

Wettest
Year	Precipitation, in
1986	11.18
1905	10.03
2019	7.71
1940	6.25
1914	6.17
2023	5.88
1901	5.17
1983	4.97
1959	4.84
2006	4.82

Driest
Year	Precipitation, in
2005	0.05
1981	0.07
1992	0.08
1984	0.10
1916	0.10
1917	0.14
1956	0.15
1968	0.18
1910	0.18
1988	0.19

The hottest, coldest and wettest days

Hottest day: 83°F; 7 December 2025, 1 December 2025
Coldest night: 58°F; 31 December 2025
Wettest day: 0.47 in; 13 December 2025

Every month, season and year

Months

Seasons

Years

Key West, FL the day's answers

All-time records

Every answer in words

December 2025 brought 0.97 in of precipitation in Key West, FL, the driest December since 2012, tied 63rd driest of 155 (with 1883).
The hottest day of December 2025 in Key West, FL: 83°F on Sunday 7 December 2025 and Monday 1 December 2025.
The coldest night of December 2025 in Key West, FL: a low of 58°F on Wednesday 31 December 2025.
The wettest day of December 2025 in Key West, FL: 0.47 in on Saturday 13 December 2025.