Philadelphia, PA: December

31 December 2025: December 2025 averaged 35°F in Philadelphia, PA, the coldest December since 2010, tied 45th coldest of 152 (with 1915 and 1874).

December 2025

Mean temperature: 35°F; Coldest since 2010; 45th coldest of 152
Precipitation: 3.35 in; Wettest since 2024; 64th wettest of 155

A normal December in Philadelphia, PA (1991 to 2020): a mean temperature of 38.7°F, between 34.2°F and 43.1°F in eight years of ten and 3.78 in of precipitation, between 2.11 in and 5.65 in in eight years of ten.

The mean temperature of every December in Philadelphia, PA since 1874: 35°F in 2025; the lowest is 25.4°F, in 1876.

Normal range, 34.2 to 43.1°F

Every year, ranked, as a table

Every December in Philadelphia, PA 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	35	106	42.3	99	27.8	109	3.35	64	0
2024	38.5	55	46.4	43	30.6	68	3.45	62	0
2023	43.5	6	50.1	12	36.8	5	7.92	3	0
2022	37.8	67	45.8	52	29.8	84	4.85	27	0
2021	45.3	2	52.6	2	38	3	1.64	132	0
2020	38.7	46	46.1	48	31.4	54	4.38	38	0
2019	38.7	46	45.5	59	31.9	39	5.21	20	0
2018	40.3	26	47.2	26	33.4	29	6.38	9	0
2017	36.1	91	42.6	94	29.5	87	1.31	140	0
2016	38.8	44	45.6	57	32.1	38	2.72	96	0
2015	51.2	1	58.2	1	44.2	1	5.14	24	0
2014	41.1	21	47.1	28	35.1	11	3.27	69	0
2013	38.7	46	45.7	55	31.7	48	5.20	21	0
2012	43.1	9	49.7	14	36.5	6	4.42	36	0
2011	43.3	7	51.4	3	35.2	10	4.37	39	0
2010	32.7	124	38.9	127	26.4	122	3.24	72	0
2009	36.4	87	43.3	83	29.4	89	8.86	1	0
2008	38.7	46	46.6	39	30.8	65	5.57	15	0
2007	37.6	70	43.5	81	31.8	42	4.41	37	0
2006	42.7	10	50.8	7	34.6	13	2.15	115	0
2005	34.4	112	41.2	112	27.5	114	2.97	88	0
2004	37.7	69	45.4	62	30.1	77	3.17	75	0
2003	36.8	83	44.1	77	29.4	89	5.46	17	0
2002	35.4	102	42.2	101	28.5	102	4.05	47	0
2001	43.7	5	51.4	3	36	7	2.11	118	0
2000	31.3	136	38	137	24.5	134	2.82	91	0
1999	39.9	30	47.2	26	32.5	35	2.99	85	0
1998	42	13	49.5	15	34.5	14	0.82	153	0
1997	38.5	55	45.5	59	31.5	51	3.09	81	0
1996	40.2	29	46.5	41	33.9	20	8.47	2	0
1995	31.5	134	37.5	141	25.6	128	2.15	115	0
1994	41.9	14	50.1	12	33.7	25	2.11	118	0
1993	38.3	59	45.2	65	31.5	51	3.69	58	0
1992	38.8	44	45.4	62	32.2	37	4.61	33	0
1991	39.6	33	47.6	23	31.6	50	3.86	54	0
1990	42.1	12	50.5	9	33.7	25	3.79	55	0
1989	25.5	151	32.9	151	18	152	1.21	142	0
1988	35.4	102	44.6	69	26.2	123	1.00	147	0
1987	39.2	39	47.1	28	31.3	55	1.68	130	0
1986	37.8	67	45.3	64	30.4	73	5.89	11	0
1985	33.3	119	41.9	105	24.6	133	0.98	149	0
1984	41.9	14	50.4	11	33.4	29	2.17	114	0
1983	33.1	122	40.5	119	25.8	126	7.37	4	0
1982	41.2	20	48.6	19	33.9	20	1.80	125	0
1981	34.6	111	41.2	112	28	107	4.14	45	0
1980	32.5	127	40.8	117	24.1	137	0.77	154	0
1979	38.2	61	45.9	50	30.5	72	1.67	131	0
1978	38.6	50	47.3	24	29.9	82	5.61	14	0
1977	32.6	126	40.3	121	24.9	132	5.19	23	0
1976	30.3	142	38.4	132	22.2	146	1.63	133	0
1975	36.9	81	44.5	71	29.3	91	2.89	89	0
1974	39.4	35	46.9	35	31.8	42	4.04	49	0
1973	38.6	50	46.3	44	30.9	61	6.34	10	0
1972	39.9	30	45.6	57	34.1	17	5.20	21	0
1971	41.5	17	49.1	18	34	18	1.21	142	0
1970	35.8	99	42.3	99	29.3	91	3.27	69	0
1969	33.5	118	39.4	124	27.6	113	7.23	6	0
1968	32.3	129	40	122	24.5	134	2.54	102	0
1967	38.5	55	45.7	55	31.3	55	5.88	12	0
1966	35.4	102	42.6	94	28.3	103	4.33	41	0
1965	37	78	45.8	52	28.1	106	1.85	124	0
1964	37.4	74	44.5	71	30.4	73	5.13	25	0
1963	27.9	149	35	148	20.7	149	1.76	128	0
1962	31	138	38.5	131	23.4	141	2.11	118	0
1961	31	138	38.7	129	23.2	143	2.78	93	0
1960	27.6	150	36.9	142	18.3	151	3.16	76	0
1959	38.2	61	45.5	59	30.9	61	3.62	60	0
1958	29.4	146	36.8	143	22	147	1.13	145	0
1957	39.4	35	46.2	45	32.6	34	4.49	35	0
1956	41.6	16	49.3	16	34	18	3.70	57	0
1955	30.5	141	38	137	22.9	144	0.25	155	0
1954	36	93	43.1	87	28.9	98	2.66	97	0
1953	39.4	35	47.8	20	31	58	4.28	42	0
1952	38.5	55	45	68	31.9	39	3.27	69	0
1951	38.6	50	46.7	36	30.6	68	5.48	16	0
1950	34.2	113	41	116	27.4	116	2.12	117	0
1949	39	41	47.1	28	30.9	61	3.03	84	0
1948	37.4	74	45.1	67	29.6	86	5.26	19	0
1947	34.2	113	41.8	106	26.5	120	1.80	125	0
1946	38	66	47.3	24	28.7	100	2.33	109	0
1945	29.8	144	36.3	145	23.3	142	4.02	51	0
1944	32.2	131	39.3	125	25.1	130	2.80	92	0
1943	32.8	123	41.8	106	23.7	138	1.23	141	0
1942	30.9	140	38.3	134	23.5	140	4.36	40	0
1941	38.3	59	46.5	41	30.1	77	3.91	53	0
1940	38.6	50	46.6	39	30.6	68	2.46	107	0
1939	38.1	63	44.5	71	31.7	48	1.18	144	0
1938	37.5	72	44	78	31.1	57	2.22	112	0
1937	36	93	42.1	103	29.9	82	1.05	146	0
1936	39.6	33	46.7	36	32.5	35	4.83	28	0
1935	31.5	134	36.5	144	26.5	120	1.55	135	0
1934	35.9	96	42.6	94	29.2	95	2.61	99	0
1933	36.2	88	43.2	86	29.3	91	2.52	104	0
1932	40.4	25	47	32	33.8	23	3.13	78	0
1931	44.2	4	51.1	5	37.3	4	1.78	127	0
1930	36.7	84	41.8	106	31.5	51	2.50	105	0
1929	38.1	63	44.5	71	31.8	42	2.98	86	0
1928	40.8	23	47.1	28	34.5	14	1.50	136	0
1927	38.9	42	45.9	50	31.9	39	3.99	52	0
1926	32.3	129	38.4	132	26.2	123	3.54	61	0
1925	36.6	85	42.6	94	30.7	67	0.96	150	0
1924	36.2	88	43.1	87	29.3	91	2.18	113	0
1923	44.5	3	50.5	9	38.6	2	4.06	46	0
1922	36.1	91	42.2	101	30	79	3.29	66	0
1921	35.6	101	42.5	98	28.6	101	2.10	121	0
1920	39.8	32	46.2	45	33.4	29	4.66	32	0
1919	32.5	127	39.3	125	25.7	127	3.33	65	0
1918	40.9	22	47	32	34.8	12	4.23	43	0
1917	28	148	34.7	149	21.4	148	2.53	103	0
1916	35.7	100	41.4	110	30	79	5.45	18	0
1915	35	106	40.8	117	29.2	95	4.22	44	0
1914	33.3	119	38.7	129	27.9	108	7.35	5	0
1913	40.3	26	46.7	36	33.9	20	2.56	100	0
1912	40.3	26	47	32	33.6	28	4.74	29	0
1911	41.5	17	47.7	21	35.3	9	3.67	59	0
1910	30.3	142	36	146	24.5	134	2.55	101	0
1909	33.3	119	38.9	127	27.7	110	5.86	13	0
1908	37.1	76	43.3	83	30.9	61	3.12	80	0
1907	39.3	38	45.2	65	33.4	29	4.67	31	0
1906	35.3	105	42.9	90	27.7	110	3.07	83	0
1905	39.2	39	45.8	52	32.7	33	2.98	86	0
1904	29.8	144	35.9	147	23.7	138	2.28	111	0
1903	31.7	133	38.2	136	25.3	129	3.29	66	0
1902	33.7	117	40	122	27.4	116	6.63	8	0
1901	35.9	96	43	89	28.8	99	6.72	7	0
1900	36.6	85	43.3	83	30	79	2.41	108	0
1899	37.5	72	44.4	75	30.6	68	1.41	137	0
1898	35.9	96	42	104	29.8	84	3.21	73	0
1897	38.1	63	44.4	75	31.8	42	4.52	34	0
1896	34.7	109	41.3	111	28.2	104	1.00	147	0
1895	38.9	42	46	49	31.8	42	1.76	128	0
1894	36.9	81	42.7	93	31	58	4.03	50	0
1893	36	93	42.9	90	29.1	97	3.13	78	0
1892	32.7	124	38	137	27.5	114	2.09	122	0
1891	42.5	11	50.7	8	34.3	16	3.78	56	0
1890	32.1	132	38.3	134	26	125	2.33	109	0
1889	43.3	7	51	6	35.6	8	0.85	151	0
1888	37	78	43.9	79	30.2	76	3.15	77	0
1887	37.1	76	43.9	79	30.4	73	5.06	26	0
1886	31.3	136	37.6	140	25.1	130	3.09	81	0
1885	37	78	44.6	69	29.5	87	2.87	90	0
1884	34.7	109	41.2	112	28.2	104	3.28	68	0
1883	37.6	70	43.5	81	31.8	42	2.76	94	0
1882	36.2	88	41.5	109	30.8	65	1.97	123	0
1881	41.5	17	49.3	16	33.7	25	2.63	98	0
1880	28.4	147	34.6	150	22.3	145	4.05	47	0
1879	38.6	50	46.2	45	31	58	4.69	30	0
1878	34.2	113	41.2	112	27.3	118	3.19	74	0
1877	40.8	23	47.7	21	33.8	23	0.83	152	0
1876	25.4	152	31.6	152	19.2	150	1.40	138	0
1875	34.1	116	40.4	120	27.7	110	3.37	63	0
1874	35	106	42.8	92	27.3	118	2.48	106	0
1873							1.38	139	31
1872							2.74	95	31
1871							1.57	134	31

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	51.2
2021	45.3
1923	44.5
1931	44.2
2001	43.7
2023	43.5
2011	43.3
1889	43.3
2012	43.1
2006	42.7

Coldest
Year	Mean, °F
1876	25.4
1989	25.5
1960	27.6
1963	27.9
1917	28
1880	28.4
1958	29.4
1945	29.8
1904	29.8
1976	30.3
More years share the last value

Wettest
Year	Precipitation, in
2009	8.86
1996	8.47
2023	7.92
1983	7.37
1914	7.35
1969	7.23
1901	6.72
1902	6.63
2018	6.38
1973	6.34

Driest
Year	Precipitation, in
1955	0.25
1980	0.77
1998	0.82
1877	0.83
1889	0.85
1925	0.96
1985	0.98
1988	1.00
1896	1.00
1937	1.05

The hottest, coldest and wettest days

Hottest day: 61°F; 19 December 2025
Coldest night: 18°F; 9 December 2025
Wettest day: 1.48 in; 19 December 2025

Every month, season and year

Months

Seasons

Years

Philadelphia, PA the day's answers

All-time records

Every answer in words

December 2025 brought 3.35 in of precipitation in Philadelphia, PA, the wettest December since 2024, 64th wettest of 155.
The hottest day of December 2025 in Philadelphia, PA: 61°F on Friday 19 December 2025.
The coldest night of December 2025 in Philadelphia, PA: a low of 18°F on Tuesday 9 December 2025.
The wettest day of December 2025 in Philadelphia, PA: 1.48 in on Friday 19 December 2025.