Boston, MA: December

31 December 2025: December 2025 averaged 31.3°F in Boston, MA, the coldest December since 2017, tied 45th coldest of 152 (with 1985, 1921 and 1874).

December 2025

Mean temperature: 31.3°F; Coldest since 2017; 45th coldest of 152
Precipitation: 2.39 in; Driest since 2006; 35th driest of 154

A normal December in Boston, MA (1991 to 2020): a mean temperature of 35.8°F, between 32.3°F and 40.1°F in eight years of ten and 4.13 in of precipitation, between 2.25 in and 6.56 in in eight years of ten.

The mean temperature of every December in Boston, MA since 1872: 31.3°F in 2025; the lowest is 21.7°F, in 1989.

Normal range, 32.3 to 40.1°F

Every year, ranked, as a table

Every December in Boston, MA from 1872 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	31.3	105	38.2	107	24.4	110	2.39	120	0
2024	35.3	53	41.8	61	28.8	49	5.65	25	0
2023	40.8	3	47.1	8	34.5	3	6.10	19	0
2022	37.3	28	44.1	30	30.5	28	3.75	68	0
2021	39.2	15	45.7	16	32.7	10	2.45	117	0
2020	36	43	42.7	47	29.2	41	5.67	24	0
2019	37.2	31	43.6	35	30.8	24	6.07	21	0
2018	37.3	28	44	31	30.5	28	2.72	107	0
2017	30.7	114	36.5	129	24.8	103	2.49	115	0
2016	35.2	55	41.9	59	28.5	52	3.25	83	0
2015	45.3	1	51.7	1	38.8	1	4.28	54	0
2014	38.2	23	43.7	34	32.7	10	6.56	12	0
2013	33.3	82	40.2	84	26.4	86	4.62	47	0
2012	38.4	22	44.3	26	32.5	14	5.93	22	0
2011	40	9	47.6	5	32.4	15	3.97	58	0
2010	32.7	91	38.7	100	26.6	83	3.61	75	0
2009	33.2	84	39.7	86	26.6	83	3.91	65	0
2008	35.7	48	43.5	38	27.8	62	7.10	7	0
2007	32.4	98	38.6	101	26.2	90	5.25	31	0
2006	41	2	47.6	5	34.5	3	1.89	129	0
2005	32.5	95	38.3	104	26.6	83	2.87	102	0
2004	35	60	42.4	52	27.6	69	3.66	71	0
2003	36	43	42.9	44	29.2	41	5.06	37	0
2002	33.1	87	39.2	92	27.1	76	5.30	30	0
2001	40.5	5	46.4	14	34.6	2	2.83	103	0
2000	29.2	126	35.9	135	22.5	122	4.67	45	0
1999	37.3	28	43.9	32	30.7	26	1.52	139	0
1998	39.1	17	46.3	15	31.9	20	1.59	138	0
1997	35.2	55	41.7	62	28.6	51	2.29	122	0
1996	39.2	15	45.5	20	33	8	5.71	23	0
1995	31.7	104	37.7	113	25.6	95	3.20	86	0
1994	38.5	20	45.6	19	31.4	23	5.37	28	0
1993	34.2	71	40.8	74	27.6	69	6.60	10	0
1992	34.8	64	41.3	68	28.3	56	8.26	3	0
1991	35.9	46	43.4	39	28.5	52	2.58	111	0
1990	40.7	4	48.8	2	32.6	12	3.18	89	0
1989	21.7	152	29.3	152	14.1	151	0.81	152	0
1988	32.8	89	40.5	79	25.1	99	1.02	149	0
1987	36.1	41	42.4	52	29.8	35	2.12	126	0
1986	35.5	51	41.7	62	29.3	40	6.38	14	0
1985	31.3	105	38	109	24.5	108	1.21	146	0
1984	39.5	11	47.1	8	31.9	20	2.93	98	0
1983	32.1	101	39.6	88	24.6	106	4.94	39	0
1982	39.5	11	46.5	13	32.6	12	1.27	144	0
1981	33.2	84	37.9	110	28.5	52	6.27	15	0
1980	28.6	133	37.7	113	19.5	143	0.97	151	0
1979	36.6	34	44.2	27	29.1	43	1.42	142	0
1978	35.3	53	42	57	28.5	52	3.63	74	0
1977	34.2	71	40.7	75	27.7	66	6.20	17	0
1976	29	128	37.2	121	20.7	137	3.35	82	0
1975	34.4	68	42.3	56	26.4	86	4.80	41	0
1974	37.7	27	43.4	39	32.1	19	3.92	63	0
1973	39.5	11	46.7	10	32.4	15	7.20	6	0
1972	33	88	38.9	95	27.1	76	6.08	20	0
1971	36.3	36	43.6	35	28.9	47	2.40	119	0
1970	28.9	131	35.5	137	22.2	124	6.92	8	0
1969	33.4	80	38.8	98	27.9	60	9.74	1	0
1968	30.9	111	37	124	24.7	104	6.23	16	0
1967	34.9	62	41	72	28.9	47	6.42	13	0
1966	34.2	71	40.7	75	27.6	69	3.03	93	0
1965	36.1	41	42.4	52	29.8	35	1.73	133	0
1964	32.4	98	38.9	95	25.9	94	5.08	36	0
1963	25.8	147	31.4	150	20.3	140	3.03	93	0
1962	30	121	37.4	118	22.6	120	4.53	48	0
1961	32.8	89	38.5	102	27.1	76	3.36	81	0
1960	29.5	124	37.1	122	21.8	126	4.82	40	0
1959	36.3	36	42.4	52	30.1	32	4.64	46	0
1958	26.4	145	33.4	144	19.3	144	1.78	131	0
1957	40	9	46.7	10	33.2	7	6.58	11	0
1956	36	43	43.2	42	28.7	50	6.13	18	0
1955	26.6	144	33.1	146	20	142	1.03	148	0
1954	34.4	68	41.2	70	27.5	73	5.40	27	0
1953	40.1	8	48.1	4	32.2	18	5.09	35	0
1952	35.6	49	41.4	67	29.9	34	4.09	57	0
1951	35	60	42.5	51	27.5	73	4.69	44	0
1950	35.5	51	42	57	29	45	3.37	80	0
1949	36.8	33	44.2	27	29.4	39	1.64	135	0
1948	36.3	36	42.6	48	30	33	1.25	145	0
1947	30.4	117	37.9	110	23	119	3.95	61	0
1946	34.8	64	43.2	42	26.3	89	3.60	76	0
1945	28.5	137	34.8	140	22.2	124	7.42	5	0
1944	30.8	113	38.2	107	23.4	115	2.83	103	0
1943	29.5	124	37.9	110	21.2	132	0.99	150	0
1942	28.6	133	35.4	138	21.7	127	4.72	42	0
1941	35.2	55	42.6	48	27.8	62	3.19	87	0
1940	34.3	70	41.9	59	26.7	82	2.76	106	0
1939	33.4	80	40.5	79	26.4	86	2.91	100	0
1938	34	75	40	85	27.9	60	2.80	105	0
1937	31.2	109	37.4	118	25	101	4.70	43	0
1936	34.9	62	42.9	44	27	79	8.18	4	0
1935	27.1	141	33.3	145	20.9	135	0.66	154	0
1934	28.5	137	35.9	135	21	134	1.64	135	0
1933	26.9	142	34.9	139	18.8	146	2.93	98	0
1932	38.1	24	45.7	16	30.5	28	1.78	131	0
1931	36.6	34	44.2	27	29	45	2.90	101	0
1930	33.2	84	39.5	90	26.9	80	2.99	97	0
1929	32.6	93	39.1	93	26.1	93	4.43	51	0
1928	38.8	19	44.8	25	32.4	15	2.61	110	1
1927	35.9	46	43.6	35	28.1	58	5.22	32	0
1926	28.6	133	36.2	132	21.1	133	3.96	59	0
1925	33.6	78	39.5	90	27.7	66	5.20	33	0
1924	31.1	110	38.8	98	23.4	115	1.48	141	0
1923	40.4	7	46.6	12	34.3	5	4.99	38	0
1922	30.9	111	37.3	120	24.5	108	3.01	95	0
1921	31.3	105	38.5	102	24.1	111	2.35	121	0
1920	35.6	49	41.7	62	29.5	38	3.89	66	0
1919	28.7	132	36.1	133	21.3	130	1.63	137	0
1918	34.7	66	41.1	71	28.3	56	3.21	85	0
1917	23.7	149	31.5	149	15.9	149	2.56	113	0
1916	32.6	93	38.3	104	26.9	80	3.00	96	0
1915	34.2	71	40.3	81	28.1	58	3.94	62	0
1914	30.4	117	37.1	122	23.7	112	3.46	78	0
1913	37.8	26	44.9	24	30.7	26	3.05	92	0
1912	38.5	20	45.2	22	31.8	22	5.36	29	0
1911	39.4	14	45.7	16	33	8	3.07	91	0
1910	27.5	140	34.8	140	20.2	141	2.10	127	0
1909	30.7	114	36.4	130	25.1	99	3.19	87	0
1908	33.3	82	41	72	25.6	95	2.47	116	0
1907	37.2	31	43.9	32	30.5	28	4.31	53	0
1906	29.1	127	36.7	126	21.5	129	3.96	59	0
1905	35.1	58	42.6	48	27.6	69	3.23	84	0
1904	25.8	147	32.9	147	18.7	147	2.52	114	0
1903	29	128	36.6	128	21.3	130	2.57	112	0
1902	28.6	133	36.7	126	20.5	139	4.48	49	0
1901	32.5	95	39.6	88	25.4	98	8.49	2	1
1900	33.5	79	40.7	75	26.2	90	2.25	123	0
1899	36.2	40	43.4	39	29.1	43	1.52	139	0
1898	31.9	103	38.9	95	25	101	2.19	124	0
1897	34	75	40.3	81	27.7	66	3.92	63	0
1896	30.4	117	37.6	115	23.1	117	1.70	134	0
1895	35.1	58	42.8	46	27.8	62	2.45	117	2
1894							4.28	54	8
1893							5.16	34	10
1892	29.9	122	36.3	131	23.5	113	1.12	147	0
1891	40.5	5	47.5	7	33.4	6	3.58	77	0
1890	26	146	34.2	142	17.8	148	3.72	69	0
1889	38	25	45.1	23	30.8	24	1.83	130	0
1888	34.6	67	41.5	65	27.8	62	4.38	52	0
1887	32.3	100	39	94	25.6	95	2.71	108	0
1886	28.4	139	36	134	20.7	137	3.66	71	0
1885	32.7	91	40.7	75	24.7	104	2.09	128	0
1884	33.7	77	41.3	68	26.2	90	4.46	50	0
1883	29	128	37	124	20.9	135	3.71	70	0
1882	30.5	116	38.3	104	22.6	120	2.65	109	0
1881	39	18	48.2	3	29.8	35	3.80	67	0
1880	26.7	143	34.1	143	19.3	144	3.42	79	0
1879	32.5	95	41.5	65	23.5	113	4.22	56	0
1878	30.3	120	37.5	116	23.1	117	6.76	9	0
1877	36.3	36	45.4	21	27.3	75	1.32	143	0
1876	22.2	151	31.6	148	12.8	152	3.66	71	0
1875	29.6	123	37.5	116	21.6	128	0.75	153	0
1874	31.3	105	40.3	81	22.3	123	2.14	125	0
1873	32.1	101	39.7	86	24.6	106	5.64	26	0
1872	23.1	150	30.6	151	15.6	150	3.09	90	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	45.3
2006	41
2023	40.8
1990	40.7
2001	40.5
1891	40.5
1923	40.4
1953	40.1
2011	40
1957	40

Coldest
Year	Mean, °F
1989	21.7
1876	22.2
1872	23.1
1917	23.7
1963	25.8
1904	25.8
1890	26
1958	26.4
1955	26.6
1880	26.7

Wettest
Year	Precipitation, in
1969	9.74
1901	8.49
1992	8.26
1936	8.18
1945	7.42
1973	7.20
2008	7.10
1970	6.92
1878	6.76
1993	6.60

Driest
Year	Precipitation, in
1935	0.66
1875	0.75
1989	0.81
1980	0.97
1943	0.99
1988	1.02
1955	1.03
1892	1.12
1985	1.21
1948	1.25

The hottest, coldest and wettest days

Hottest day: 59°F; 19 December 2025
Coldest night: 12°F; 26 December 2025, 5 December 2025
Wettest day: 0.72 in; 29 December 2025

Every month, season and year

Months

Seasons

Years

Boston, MA the day's answers

All-time records

Every answer in words

December 2025 brought 2.39 in of precipitation in Boston, MA, the driest December since 2006, 35th driest of 154.
The hottest day of December 2025 in Boston, MA: 59°F on Friday 19 December 2025.
The coldest night of December 2025 in Boston, MA: a low of 12°F on Friday 26 December 2025 and Friday 5 December 2025.
The wettest day of December 2025 in Boston, MA: 0.72 in on Monday 29 December 2025.