Williamsport, PA: December

31 December 2025: December 2025 averaged 28.2°F in Williamsport, PA, the coldest December since 2010, tied 26th coldest of 130 (with 1909).

December 2025

Mean temperature: 28.2°F; Coldest since 2010; 26th coldest of 130
Precipitation: 2.33 in; Driest since 2021; 41st driest of 129

A normal December in Williamsport, PA (1991 to 2020): a mean temperature of 33°F, between 27.9°F and 36.5°F in eight years of ten and 3.08 in of precipitation, between 1.57 in and 5.01 in in eight years of ten.

The mean temperature of every December in Williamsport, PA since 1895: 28.2°F in 2025; the lowest is 19.8°F, in 1989.

Normal range, 27.9 to 36.5°F

Every year, ranked, as a table

Every December in Williamsport, PA from 1895 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	28.2	104	35.6	97	20.8	105	2.33	89	0
2024	32.1	58	39.3	56	24.9	64	3.28	49	0
2023	39.7	2	46.5	4	32.9	2	5.19	10	0
2022	32.2	56	39.7	50	24.7	68	5.15	11	0
2021	38.4	4	46	5	30.8	4	1.37	115	0
2020	33.1	46	40.3	37	25.9	48	4.94	14	0
2019	33.4	40	39.7	50	27	32	2.79	66	0
2018	35.8	14	42	24	29.5	9	6.19	3	0
2017	31.5	71	38.7	63	24.3	73	1.19	118	0
2016	33.5	38	40.3	37	26.7	39	2.96	57	0
2015	43	1	48.7	2	37.4	1	3.36	45	0
2014	35.7	16	41.3	30	30	6	2.60	76	0
2013	30.2	83	37.6	81	22.8	89	3.64	43	0
2012	36.7	9	42.7	17	30.7	5	5.61	8	0
2011	36.4	11	43.8	13	29	12	3.68	41	0
2010	28	106	34.8	104	21.3	102	4.03	33	0
2009	32.2	56	38.7	63	25.6	54	4.08	32	0
2008	32	60	39.5	54	24.6	71	3.98	36	0
2007	32.1	58	37.8	76	26.3	43	4.74	16	0
2006	37.8	6	46.8	3	28.8	17	2.48	82	0
2005	26.7	110	33.5	115	20	110	2.27	90	0
2004	31.6	69	39.2	57	23.9	77	4.16	28	0
2003	31.7	67	38.6	65	24.9	64	4.42	21	0
2002	28.3	103	35.4	101	21.2	104	3.36	45	0
2001	36.5	10	44	9	29	12	1.58	111	0
2000	24	126	31.6	124	16.3	124	2.68	70	0
1999	33.5	38	41.1	31	26	46	2.36	84	0
1998	35.8	14	45.2	7	26.4	41	0.89	124	0
1997	32.6	52	39.1	58	26.1	44	1.90	104	0
1996	34.8	26	40.2	39	29.4	11	5.72	6	0
1995	25.2	120	32.5	120	17.9	122	1.47	112	0
1994	35.1	22	43.7	14	26.4	41	2.80	64	0
1993	30.6	78	38.3	68	22.9	87	2.66	72	0
1992	32.9	47	40.5	34	25.4	58	2.35	86	0
1991	34	33	42.1	23	25.9	48	3.20	51	0
1990	35.3	19	43.1	15	27.5	26	5.73	5	0
1989	19.8	130	27.7	131	11.8	129	0.68	128	0
1988	30.5	79	38.8	61	22.1	96	1.14	121	0
1987	33.7	36	40.4	35	27	32	1.63	109	0
1986	33.4	40	40	40	26.8	35	3.99	35	0
1985	27.9	107	35	103	20.8	105	1.42	114	0
1984	35.6	18	42.4	20	28.9	15	2.34	88	0
1983	26.6	111	32.5	120	20.8	105	6.54	2	0
1982	36.9	8	44.2	8	29.5	9	1.35	116	0
1981	30.2	83	35.6	97	24.7	68	1.95	102	0
1980	25	121	34.5	109	15.5	127	1.18	119	0
1979	35	25	42.5	19	27.5	26	1.90	104	0
1978	32.5	53	39.9	41	25.1	62	3.68	41	0
1977	28.4	102	35.4	101	21.4	100	4.22	25	0
1976	26.1	115	34.8	104	17.3	123	1.74	108	0
1975	31.8	64	37.6	81	25.9	48	3.24	50	0
1974	34.1	32	39.5	54	28.7	19	4.50	20	0
1973	31.6	69	37.7	80	25.6	54	7.36	1	0
1972	34.3	30	39.6	53	29	12	4.79	15	0
1971	35.1	22	41.8	26	28.4	20	2.87	60	0
1970	32.8	48	38.8	61	26.8	35	4.12	30	0
1969	28.5	100	36.4	90	20.6	108	5.63	7	0
1968	30.5	79	37.4	86	23.6	83	2.96	57	0
1967	33.4	40	41.1	31	25.8	52	2.71	68	0
1966	30.1	88	37.4	86	22.7	91	1.92	103	0
1965	34.6	27	41.9	25	27.4	28	0.93	122	0
1964	31.5	71	37.8	76	25.2	60	2.66	72	0
1963	25.4	118	32	123	18.8	114	2.41	83	0
1962	24.7	123	33.3	117	16	125	2.87	60	0
1961	30.3	82	37.8	76	22.8	89	2.53	79	0
1960	22.1	128	32.5	120	11.6	130	1.80	107	0
1959	32.8	48	39.8	47	25.7	53	4.18	26	0
1958	23.6	127	31.6	124	15.6	126	0.90	123	0
1957	35.2	20	42.4	20	28	23	5.05	13	0
1956	35.7	16	43.1	15	28.4	20	4.28	23	0
1955	25.8	116	33.4	116	18.3	116	0.84	127	0
1954	31.1	75	37.6	81	24.7	68	3.87	38	0
1953	34.6	27	43.9	11	25.2	60	3.20	51	0
1952	33.7	36	40.8	33	26.6	40	4.27	24	0
1951	30	90	38.6	65	21.4	100	4.65	17	0
1950	26.5	113	34.5	109	18.5	115	3.55	44	0
1949	31.9	62	39.8	47	24.1	75	3.36	45	0
1948	30.9	76	38.4	67	23.4	85	5.08	12	0
1947	29.1	95	36.2	92	22	98	1.17	120	0
1946	31.7	67	39.7	50	23.7	82	1.89	106	0
1945	24.7	123	31.3	128	18.2	119	2.61	75	0
1944	28.6	99	34.6	108	22.5	92	4.18	26	0
1943	28.9	98	38.1	72	19.6	111	0.86	126	0
1942	28.5	100	34.8	104	22.1	96	4.64	18	0
1941	35.2	20	41.5	29	28.8	17	4.02	34	0
1940	33.9	35	40.4	35	27.4	28	2.67	71	0
1939	33.4	40	39.9	41	26.9	34	1.62	110	0
1938	32	60	38.1	72	25.9	48	3.03	55	0
1937	29.3	93	35.5	99	23	86	1.97	100	0
1936	32.7	51	39.9	41	25.6	54	3.07	54	0
1935	26.5	113	31.6	124	21.3	102	2.17	93	0
1934	30.2	83	36.3	91	24.1	75	2.78	67	0
1933	30.4	81	37.9	75	22.9	87	2.17	93	0
1932	31.9	62	39.9	41	23.9	77	1.46	113	0
1931	36.4	11	44	9	28.9	15	2.80	64	0
1930	30.1	88	35.8	95	24.4	72	2.22	91	0
1929	31.3	74	37.5	84	25.1	62	2.93	59	0
1928	34.2	31	41.6	27	26.8	35	0.63	129	0
1927	32.3	55	39.1	58	25.5	57	3.91	37	0
1926	25.5	117	32.8	118	18.1	120	2.01	98	0
1925	31.8	64	37.5	84	26.1	44	2.21	92	0
1924	29.2	94	36	93	22.3	93	1.31	117	0
1923	39.3	3	45.6	6	32.9	2	4.40	22	0
1922	30.2	83	38.2	70	22.3	93	2.71	68	0
1921	31.4	73	38.1	72	24.8	67	2.58	78	0
1920	34	33	39.8	47	28.3	22	3.03	55	0
1919	25.4	118	32.6	119	18.1	120	1.97	100	0
1918	36.3	13	42.6	18	30	6	2.07	96	0
1917	21.3	129	28.9	130	13.6	128	2.01	98	0
1916	30.9	76	37.8	76	23.9	77	2.04	97	0
1915	29.5	92	34.8	104	24.2	74	4.15	29	0
1914	27.3	109	34.2	112	20.4	109	5.32	9	0
1913	35.1	22	42.4	20	27.8	24	3.09	53	0
1912	37.9	5	49.8	1	26	46	2.49	81	0
1911	37	7	43.9	11	30	6	2.53	79	0
1910	24.9	122	31.5	127	18.3	116	2.12	95	0
1909	28.2	104	34.5	109	22	98	3.31	48	0
1908	31.8	64	38.2	70	25.3	59	2.36	84	0
1907	32.8	48	38.3	68	27.4	28	4.11	31	0
1906	29.9	91	36	93	23.8	81	2.60	76	0
1905	34.5	29	41.6	27	27.4	28	3.77	39	0
1904	24.4	125	30.5	129	18.3	116	2.63	74	0
1903	26.6	111	34.1	114	19.2	113	2.85	63	0
1902	29	96	35.7	96	22.2	95	3.74	40	0
1901	27.4	108	35.5	99	19.3	112	5.86	4	0
1900			37.1	88					4
1899	32.4	54	39.9	41	24.9	64	4.63	19	0
1898	29	96	34.2	112	23.9	77	2.86	62	0
1897	33.4	40	39	60	27.8	24			0
1896	30.2	83	36.8	89	23.6	83	0.89	124	0
1895	33.4	40	39.9	41	26.8	35	2.35	86	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	43
2023	39.7
1923	39.3
2021	38.4
1912	37.9
2006	37.8
1911	37
1982	36.9
2012	36.7
2001	36.5

Coldest
Year	Mean, °F
1989	19.8
1917	21.3
1960	22.1
1958	23.6
2000	24
1904	24.4
1962	24.7
1945	24.7
1910	24.9
1980	25

Wettest
Year	Precipitation, in
1973	7.36
1983	6.54
2018	6.19
1901	5.86
1990	5.73
1996	5.72
1969	5.63
2012	5.61
1914	5.32
2023	5.19

Driest
Year	Precipitation, in
1928	0.63
1989	0.68
1955	0.84
1943	0.86
1998	0.89
1896	0.89
1958	0.90
1965	0.93
1988	1.14
1947	1.17

The hottest, coldest and wettest days

Hottest day: 56°F; 19 December 2025
Coldest night: 6°F; 9 December 2025
Wettest day: 1.02 in; 19 December 2025

Every month, season and year

Months

Seasons

Years

Williamsport, PA the day's answers

All-time records

Every answer in words

December 2025 brought 2.33 in of precipitation in Williamsport, PA, the driest December since 2021, 41st driest of 129.
The hottest day of December 2025 in Williamsport, PA: 56°F on Friday 19 December 2025.
The coldest night of December 2025 in Williamsport, PA: a low of 6°F on Tuesday 9 December 2025.
The wettest day of December 2025 in Williamsport, PA: 1.02 in on Friday 19 December 2025.