Average December Temperature in Key West by Year

This page contains a list of the average monthly high and low temperatures in Key West, Florida for the month of December each year between 1948 and 2023. It is based on NOAA data.

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What Was the Hottest December Ever in Key West?

2015 was the warmest December in the history of Key West, Florida. The average daily high temperature was 80.6 °F, and the average low was 74.6 °F.

What Was the Coldest December Ever in Key West?

2010 was the coolest December in the history of Key West, Florida. The average daily high temperature was 68.3 °F, and the average low was 58.0 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	38	76.4	67.7
2022	23	78.2	68.8
2021	7	79.9	71.1
2020	54	74.9	65.2
2019	9	79.7	70.9
2018	8	79.6	71.2
2017	30	78.0	67.5
2016	2	81.7	73.2
2015	1	80.6	74.6
2014	29	77.4	68.1
2013	5	79.4	72.1
2012	25	77.9	68.8
2011	19	78.0	69.8
2010	72	68.3	58.0
2009	24	77.6	69.2
2008	44	76.2	66.4
2007	12	79.7	69.9
2006	15	77.9	70.7
2005	53	75.5	65.1
2004	49	75.9	65.7
2003	65	73.3	63.6
2002	45	76.2	66.3
2001	20	78.1	69.6
2000	55	74.0	65.8
1999	37	77.0	67.2
1998	10	79.3	70.7
1997	50	75.2	66.0
1996	32	77.6	67.4
1995	59	74.1	64.2
1994	21	78.2	69.3
1993	48	76.4	65.3
1992	28	77.8	67.9
1991	27	77.7	68.1
1990	13	78.8	70.3
1989	70	73.4	61.0
1988	42	76.7	66.1
1987	41	76.4	66.6
1986	11	79.3	70.6
1985	61	74.2	63.7
1984	17	78.2	69.9
1983	31	77.4	67.9
1982	26	77.3	69.4
1981	51	75.2	65.8
1980	63	73.1	63.9
1979	36	76.4	68.2
1978	4	80.5	71.7
1977	57	74.0	64.7
1976	47	75.9	65.8
1975	43	76.2	66.6
1974	39	76.6	67.5
1973	52	75.2	65.7
1972	22	78.3	68.9
1971	3	80.0	72.4
1970	34	77.2	67.7
1969	58	74.1	64.2
1968	60	73.2	64.7
1967	14	78.7	70.2
1966	56	74.2	65.0
1965	40	76.5	67.3
1964	18	78.2	69.5
1963	71	71.1	62.2
1962	69	72.3	62.1
1961	33	77.3	67.7
1960	67	72.3	62.7
1959	62	73.5	64.1
1958	46	75.6	66.6
1957	68	72.9	62.1
1952	64	74.3	62.7
1951	16	79.3	69.1
1950	66	73.8	62.6
1949	35	76.7	68.0
1948	6	80.4	71.0

Weather Station Details

Years	Station	Coordinates
1948–2024	Key West International Airport	location