Hartford, CT: December

31 December 2025: December 2025 averaged 28°F in Hartford, CT, the coldest December since 2017, tied 28th coldest of 121 (with 1977).

December 2025

Mean temperature: 28°F; Coldest since 2017; 28th coldest of 121
Precipitation: 3.35 in; Driest since 2021; 47th driest of 121

A normal December in Hartford, CT (1991 to 2020): a mean temperature of 32.2°F, between 28.1°F and 37°F in eight years of ten and 4.24 in of precipitation, between 2.20 in and 5.74 in in eight years of ten.

The mean temperature of every December in Hartford, CT since 1905: 28°F in 2025; the lowest is 18.1°F, in 1989.

Normal range, 28.1 to 37°F

Every year, ranked, as a table

Every December in Hartford, CT from 1905 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
2025	28	93	36.4	86	19.5	99	3.35	74
2024	33.8	29	42.2	27	25.4	37	4.22	49
2023	39.1	2	46.1	5	32.1	3	8.04	3
2022	34	27	43.1	18	25	44	4.50	40
2021	38	4	45.8	7	30.1	4	2.95	86
2020	33.7	31	42.2	27	25.3	42	5.30	22
2019	31.7	59	39.5	57	24	58	7.93	4
2018	33.1	39	41.5	36	24.7	50	4.96	26
2017	27.5	97	34.7	100	20.2	93	2.41	97
2016	32.1	54	40.6	47	23.7	62	2.73	89
2015	43.2	1	51	1	35.5	1	4.25	46
2014	35.7	16	42	30	29.3	7	4.55	35
2013	30.4	74	38.5	63	22.3	76	3.92	54
2012	35.3	20	42.5	24	28	14	4.55	35
2011	37.5	6	46.9	3	28.1	13	5.00	25
2010	28.5	87	36.4	86	20.6	89	6.15	13
2009	30.3	76	37.6	73	22.9	71	5.50	18
2008	32.2	50	40.9	45	23.5	65	6.65	10
2007	30	77	37.1	79	23	70	4.33	43
2006	38	4	46.7	4	29.3	7	1.83	109
2005	28.2	89	35.9	91	20.5	91	3.67	63
2004	30.4	74	39.3	60	21.5	86	4.23	47
2003	33	42	41.1	43	24.9	47	4.96	26
2002	29.9	79	37.6	73	22.1	80	3.74	61
2001	36.9	8	45.4	9	28.4	11	2.20	102
2000	25.4	108	33.8	108	16.9	110	3.30	76
1999	34.6	25	42.9	19	26.2	28	2.47	94
1998	36.7	9	45.9	6	27.6	19	0.83	119
1997	31.4	63	39.3	60	23.5	65	2.18	103
1996	35.8	15	42.5	24	29.1	10	5.69	16
1995	27	100	34.5	101	19.6	98	2.32	101
1994	35	22	44.2	12	25.8	31	5.38	20
1993	30.9	69	39.4	58	22.4	74	4.16	50
1992	31.1	65	38.4	65	23.9	59	4.33	43
1991	32.7	44	41.3	39	24.2	56	2.96	85
1990	36.7	9	45.5	8	27.9	16	4.86	28
1989	18.1	121	26.5	121	9.7	121	1.49	111
1988	29.2	83	38.4	65	20.1	95	1.35	113
1987	33.2	38	41	44	25.4	37	1.57	110
1986	33.1	39	40.6	47	25.5	34	6.15	13
1985	27.5	97	35.6	95	19.3	100	1.28	115
1984	35.7	16	44.6	11	26.8	24	2.46	95
1983	28.1	91	36.5	84	19.7	97	5.97	15
1982	35.9	14	44	13	27.9	16	1.32	114
1981	31	66	37.4	75	24.6	52	4.00	53
1980	24.5	113	35.6	95	13.5	115	0.82	120
1979	33.5	34	41.8	33	25.3	42	2.57	92
1978	29.2	83	37.9	71	20.6	89	4.23	47
1977	28	93	35.1	98	20.9	88	5.68	17
1976	24.7	112	35.1	98	14.4	114	2.97	84
1975	28.5	87	36.7	81	20.2	93	4.31	45
1974	30.6	72	38	69	23.3	67	4.52	37
1973	32.9	43	41.4	37	24.4	54	8.31	2
1972	30.8	70	36.2	89	25.4	37	7.08	5
1971	32.7	44	40.5	49	25	44	3.55	67
1970	26.7	104	34.2	103	19.3	100	4.15	51
1969	26.8	102	33.4	110	20.3	92	8.36	1
1968	25.4	108	33.3	111	17.5	108	5.22	24
1967	32.1	54	40.2	53	23.9	59	6.77	8
1966	31.8	58	40	54	23.6	63	3.60	64
1965	33.8	29	41.4	37	26.1	30	2.02	105
1964	29.7	80	37.3	77	22.1	80	4.51	39
1963	21.5	119	29.5	119	13.4	116	2.42	96
1962	22.5	117	32.8	113	12.1	119	2.61	91
1961	28.9	86	35.7	94	22	83	3.15	78
1960	22.6	116	33.2	112	12.1	119	2.53	93
1959	31.2	64	39.4	58	22.9	71	4.45	42
1958	21.9	118	31.4	118	12.5	118	1.42	112
1957	35.3	20	43.6	15	27	22	6.33	12
1956	33.3	36	41.3	39	25.4	37	4.84	29
1955	24.3	114	31.7	117	16.8	111	0.78	121
1954	32	57	40.5	49	23.6	63	4.65	34
1953	37	7	47	2	27	22	4.73	32
1952	33.9	28	42.3	26	25.5	34	3.77	60
1951	32.2	50	41.3	39	23.1	69	5.36	21
1950	31.7	59	39.3	60	24.2	56	4.12	52
1949	32.1	54	42	30	22.3	76	3.40	70
1948	32.2	50	41.6	34	22.8	73	5.50	18
1947	27.9	95	36.7	81	19	103	3.55	67
1946	32.3	48	42.2	27	22.4	74	2.84	87
1945	24	115	32.6	115	15.4	113	6.85	7
1944	26.8	102	35.8	92	17.7	107	3.07	80
1943	26.9	101	37.2	78	16.6	112	0.91	118
1942	26.2	107	34.2	103	18.3	105	6.69	9
1941	33.3	36	41.6	34	24.9	47	3.08	79
1940	32.5	46	40.8	46	24.3	55	2.67	90
1939	32.3	48	39.8	55	24.8	49	3.79	59
1938	32.4	47	38.3	67	26.5	27	3.86	55
1937	31	66	37.4	75	24.7	50	2.33	100
1936	35	22	42.7	22	27.3	21	6.88	6
1935	27.9	95	33.7	109	22	83	0.99	116
1934	29.6	81	36.1	90	23.2	68	3.36	71
1933	26.6	105	34.1	107	19.1	102	3.72	62
1932	34.7	24	42.7	22	26.7	25	1.88	108
1931	35.7	16	43.4	16	28	14	3.00	81
1930	31.7	59	38	69	25.4	37	2.35	98
1929	30.7	71	36.4	86	25	44	3.85	56
1928	36.5	11	43.8	14	29.2	9	0.92	117
1927	33.1	39	40.3	52	25.8	31	5.28	23
1926	25.4	108	32.5	116	18.3	105	3.35	74
1925	32.2	50	38.1	68	26.2	28	2.99	82
1924	29.5	82	36.6	83	22.3	76	1.90	107
1923	38.6	3	44.9	10	32.4	2	4.84	29
1922	29	85	35.8	92	22.1	80	4.52	37
1921	30	77	37.8	72	22.2	79	2.35	98
1920	33.5	34	39.6	56	27.5	20	6.35	11
1919	26.4	106	34.2	103	18.6	104	2.06	104
1918	33.6	33	40.5	49	26.6	26	3.56	66
1917	20.9	120	28.4	120	13.4	116	3.22	77
1916	31	66	36.5	84	25.6	33	2.99	82
1915	30.5	73	37.1	79	23.8	61	4.78	31
1914	28.2	89	35.2	97	21.3	87	3.85	56
1913	35.6	19	42.9	19	28.2	12	3.59	65
1912	36.5	11	43.4	16	29.6	6	4.46	41
1911	36.4	13	42.9	19	29.9	5	3.36	71
1910	25.2	111	32.8	113	17.5	108	1.93	106
1909	28.1	91	34.3	102	22	83	2.83	88
1908	31.5	62	38.5	63	24.6	52	3.36	71
1907	34.5	26	41.3	39	27.7	18	4.70	33
1906	27.1	99	34.2	103	20.1	95	3.83	58
1905	33.7	31	41.9	32	25.5	34	3.47	69

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	43.2
2023	39.1
1923	38.6
2021	38
2006	38
2011	37.5
1953	37
2001	36.9
1998	36.7
1990	36.7

Coldest
Year	Mean, °F
1989	18.1
1917	20.9
1963	21.5
1958	21.9
1962	22.5
1960	22.6
1945	24
1955	24.3
1980	24.5
1976	24.7

Wettest
Year	Precipitation, in
1969	8.36
1973	8.31
2023	8.04
2019	7.93
1972	7.08
1936	6.88
1945	6.85
1967	6.77
1942	6.69
2008	6.65

Driest
Year	Precipitation, in
1955	0.78
1980	0.82
1998	0.83
1943	0.91
1928	0.92
1935	0.99
1985	1.28
1982	1.32
1988	1.35
1958	1.42

The hottest, coldest and wettest days

Hottest day: 58°F; 19 December 2025
Coldest night: 1°F; 28 December 2025
Wettest day: 1.12 in; 19 December 2025

Every month, season and year

Months

Seasons

Years

Hartford, CT the day's answers

All-time records

Every answer in words

December 2025 brought 3.35 in of precipitation in Hartford, CT, the driest December since 2021, tied 47th driest of 121 (with 1926).
The hottest day of December 2025 in Hartford, CT: 58°F on Friday 19 December 2025.
The coldest night of December 2025 in Hartford, CT: a low of 1°F on Sunday 28 December 2025.
The wettest day of December 2025 in Hartford, CT: 1.12 in on Friday 19 December 2025.