Middletown-Harrisburg, PA: December

31 December 2025: December 2025 averaged 31°F in Middletown-Harrisburg, PA, the coldest December since 2010, tied 30th coldest of 136 (with 2002).

December 2025

Mean temperature: 31°F; Coldest since 2010; 30th coldest of 136
Precipitation: 2.18 in; Driest since 2021; 39th driest of 138

A normal December in Middletown-Harrisburg, PA (1991 to 2020): a mean temperature of 35.9°F, between 30.7°F and 39.8°F in eight years of ten and 3.39 in of precipitation, between 1.96 in and 5.17 in in eight years of ten.

The mean temperature of every December in Middletown-Harrisburg, PA since 1888: 31°F in 2025; the lowest is 22.6°F, in 1989.

Normal range, 30.7 to 39.8°F

Every year, ranked, as a table

Every December in Middletown-Harrisburg, PA from 1888 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	106	38.4	96	23.7	113	2.18	100	0
2024	34.5	63	42	54	27	78	3.66	40	0
2023	41.1	6	48.5	6	33.7	5	5.16	11	0
2022	34.2	67	42.2	49	26.2	90	4.35	24	0
2021	41.9	2	50.2	2	33.5	6	0.84	132	0
2020	36.9	31	44.6	25	29.3	40	4.15	29	0
2019	36.2	39	43.6	35	28.8	46	3.66	40	0
2018	37.2	28	44.4	27	30.1	30	5.70	8	0
2017	32.6	91	40.2	75	25	99	1.18	126	0
2016	35.8	49	43.1	40	28.6	49	2.36	93	0
2015	45.4	1	52.5	1	38.3	1	4.29	26	0
2014	36.3	38	43	43	29.7	36	3.26	59	0
2013	34.1	71	41.7	59	26.5	86	3.74	38	0
2012	38.8	16	45.7	20	31.9	14	3.79	35	0
2011	38.9	15	47.7	11	30.2	27	3.26	59	0
2010	30.7	110	36.9	112	24.4	108	1.97	107	0
2009	33.5	80	39.9	79	27.1	75	4.99	14	0
2008	34.7	60	41.9	58	27.5	68	6.83	2	0
2007	34.7	60	40.6	71	28.7	47	5.11	12	0
2006	40.2	10	49.6	4	30.7	20	2.30	95	0
2005	30.3	111	36.9	112	23.6	114	2.72	77	0
2004	35.3	54	43.1	40	27.5	68	3.37	52	0
2003	34.2	67	41.3	67	27.1	75	3.40	49	0
2002	31	106	37.9	103	24.1	111	4.60	20	0
2001	39.8	14	47.9	8	31.6	16	1.87	113	0
2000	26.5	133	33.4	133	19.5	134	3.99	30	0
1999	37.3	26	45.7	20	29	42	2.57	81	0
1998	40.6	7	49.9	3	31.4	17	0.31	137	0
1997	36	44	43.5	36	28.5	50	2.01	104	0
1996	37.3	26	44.1	32	30.4	23	5.98	7	0
1995	29.6	117	35.8	118	23.3	119	2.53	83	0
1994	38.5	17	46.8	17	30.2	27	2.92	71	0
1993	34	75	41.2	68	26.7	84	3.95	31	0
1992	35.3	54	42	54	28.5	50	2.42	85	0
1991	36.5	35	44.4	27	28.5	50	3.49	46	0
1990	38.4	20	47.3	14	29.5	39	6.05	6	0
1989	22.6	136	29.5	136	15.7	137	1.27	125	0
1988	33.3	85	42	54	24.5	105	0.90	130	0
1987	36.6	33	43.4	38	29.8	35	1.84	114	0
1986	36	44	41.5	63	30.6	21	4.90	15	0
1985	30.9	108	37.1	109	24.8	103	1.28	124	0
1984	41.4	4	47.7	11	35.2	3	2.28	97	0
1983	28.7	124	34.7	126	22.7	125	7.57	1	0
1982	41.4	4	48.6	5	34.1	4	1.56	120	0
1981	31.8	97	37.5	106	26.2	90	2.41	87	0
1980	29.6	117	37.9	103	21.3	128	0.77	133	0
1979	37.6	22	45.9	19	29.2	41	1.46	123	0
1978	36.5	35	44.8	24	28.1	60	3.95	31	0
1977	31.6	100	38.3	98	24.9	101	4.82	16	0
1976	30	113	37.2	108	22.8	123	1.96	108	0
1975	34.1	71	39.8	81	28.5	50	3.19	63	0
1974	35.4	53	42.2	49	28.5	50	4.59	21	0
1973	36.2	39	42.7	45	29.7	36	6.52	3	0
1972	36.8	32	42.6	46	31	18	5.31	9	0
1971	40.3	8	47.2	15	33.4	7	1.93	109	0
1970	34.8	59	41.7	59	27.8	65	3.50	45	0
1969	31.4	101	37.1	109	25.7	94	6.46	4	0
1968	31.3	102	38	102	24.6	104	2.12	101	0
1967	34.7	60	42.1	52	27.4	71	4.27	27	0
1966	31.7	99	38.5	94	24.9	101	3.08	67	0
1965	35.6	50	43.5	36	27.8	65	0.87	131	2
1964	33.9	76	40.8	70	27	78	3.11	66	0
1963	26.8	130	34.1	130	19.6	133	2.36	93	0
1962	28.2	127	36	117	20.4	132	3.32	57	0
1961	31.1	104	39.1	91	23.1	121	3.42	48	0
1960	25.6	134	35.8	118	15.4	138	2.41	87	0
1959	35.9	47	42.9	44	29	42	3.01	68	0
1958	26.8	130	34.6	127	18.9	135	0.66	134	0
1957	37.2	28	44.2	30	30.3	25	5.23	10	0
1956	40.1	13	47.4	13	32.9	9	4.26	28	0
1955	28.5	125	35.6	121	21.4	127	0.23	138	0
1954	33.4	83	39.5	86	27.3	73	2.94	70	0
1953	37.6	22	46.3	18	28.9	45	3.20	62	0
1952	36.1	42	42.2	49	29.9	32	3.17	64	0
1951	33.9	76	41.6	62	26.1	92	4.75	17	0
1950	30.1	112	36.7	114	23.5	118	3.75	36	0
1949	35.5	52	43.1	40	28	62	2.77	74	1
1948	34.3	65	41.7	59	26.8	83	3.53	44	0
1947	32.6	91	39.6	85	25.7	94	1.15	128	0
1946	36.4	37	45.1	22	27.6	67	1.99	106	0
1945	28.9	123	35	125	22.8	123	3.32	57	0
1944	29.8	115	36.4	115	22.9	122	2.61	78	1
1943					23.6	114	1.06	129	10
1942			38.4	96	23.6	114	5.04	13	5
1941	37.5	25	44.4	27	30.5	22	3.49	46	0
1940	37.6	22	45	23	30.3	25	2.86	73	0
1939	35.9	47	42.1	52	29.6	38	1.90	112	0
1938	34.1	71	39.7	84	28.5	50	3.65	42	0
1937	32.7	90	38.5	94	27	78	1.52	122	0
1936	36.1	42	42.3	48	29.9	32	6.06	5	0
1935	29.1	122	33.9	132	24.3	110	2.21	99	0
1934	33.3	85	39.2	90	27.4	71	4.33	25	0
1933	32.8	89	39.9	79	25.6	96	1.56	120	0
1932	35	57	42.5	47	27.5	68	1.83	115	0
1931	40.2	10	47	16	33.4	7	1.70	117	0
1930	32.1	95	37.9	103	26.4	88	2.27	98	0
1929	33.4	83	39.8	81	27.1	75	2.40	90	0
1928	37.1	30	43.9	34	30.2	27	0.62	135	0
1927	34.9	58	41.5	63	28.3	58	3.33	56	0
1926	29.2	121	35.2	123	23.2	120	2.60	79	0
1925	33.6	79	38.8	92	28.4	57	2.01	104	0
1924	32.3	94	38.7	93	25.9	93	1.63	118	0
1923	41.8	3	47.8	10	35.8	2	3.75	36	0
1922	32.9	88	39.5	86	26.3	89	2.41	87	0
1921	33.5	80	40.2	75	26.9	82	2.60	79	0
1920	36.2	39	41.5	63	31	18	3.94	33	0
1919	27.5	128	34	131	21	129	2.29	96	0
1918	38.5	17	44.5	26	32.6	11	3.65	42	0
1917	23.4	135	29.2	137	17.7	136	2.91	72	0
1916	32.4	93	38.2	99	26.5	86	2.39	91	0
1915	32.1	95	37	111	27.2	74	3.35	53	0
1914	29.4	120	34.6	127	24.1	111	4.63	19	0
1913	38	21	44.1	32	31.9	14	2.74	76	0
1912	36.6	33	43.4	38	29.9	32	3.83	34	0
1911	38.5	17	44.2	30	32.9	9	2.75	75	0
1910	26.8	130	32.7	135	20.9	130	2.57	81	0
1909	29.8	115	35.1	124	24.5	105	2.98	69	0
1908	33.7	78	39.5	86	27.9	63	2.07	103	0
1907	34.2	67	39.8	81	28.5	50	4.43	23	0
1906	31.1	104	37.3	107	25	99	3.34	54	0
1905	36	44	42	54	30	31	3.39	50	0
1904	27	129	33.4	133	20.6	131	2.39	91	0
1903	28.3	126	34.6	127	22	126	1.92	110	0
1902	30	113	35.7	120	24.4	108	4.57	22	0
1901	31.3	102	38.1	100	24.5	105	4.75	17	0
1900	34.1	71	40.3	74	27.9	63	1.62	119	0
1899	34.3	65	40.5	72	28.1	60	1.83	115	0
1898	31.8	97	38.1	100	25.5	97	3.16	65	0
1897	35.6	50	40.9	69	30.4	23	3.21	61	0
1896	33	87	39.4	89	26.6	85	0.40	136	0
1895	35.2	56	41.5	63	29	42	3.38	51	0
1894	34.5	63	40.4	73	28.7	47	3.34	54	0
1893	33.5	80	40.1	77	27	78	1.91	111	0
1892	30.9	108	36.2	116	25.5	97	1.17	127	0
1891	40.2	10	48.1	7	32.3	13	3.71	39	0
1890	29.6	117	35.5	122	23.6	114	2.42	85	0
1889	40.3	8	47.9	8	32.6	11	2.11	102	0
1888	34.2	67	40.1	77	28.2	59	2.46	84	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	45.4
2021	41.9
1923	41.8
1984	41.4
1982	41.4
2023	41.1
1998	40.6
1971	40.3
1889	40.3
2006	40.2
More years share the last value

Coldest
Year	Mean, °F
1989	22.6
1917	23.4
1960	25.6
2000	26.5
1963	26.8
1958	26.8
1910	26.8
1904	27
1919	27.5
1962	28.2

Wettest
Year	Precipitation, in
1983	7.57
2008	6.83
1973	6.52
1969	6.46
1936	6.06
1990	6.05
1996	5.98
2018	5.70
1972	5.31
1957	5.23

Driest
Year	Precipitation, in
1955	0.23
1998	0.31
1896	0.40
1928	0.62
1958	0.66
1980	0.77
2021	0.84
1965	0.87
1988	0.90
1943	1.06

The hottest, coldest and wettest days

Hottest day: 57°F; 19 December 2025
Coldest night: 8°F; 16 December 2025
Wettest day: 0.64 in; 2 December 2025

Every month, season and year

Months

Seasons

Years

Middletown-Harrisburg, PA the day's answers

All-time records

Every answer in words

December 2025 brought 2.18 in of precipitation in Middletown-Harrisburg, PA, the driest December since 2021, 39th driest of 138.
The hottest day of December 2025 in Middletown-Harrisburg, PA: 57°F on Friday 19 December 2025.
The coldest night of December 2025 in Middletown-Harrisburg, PA: a low of 8°F on Tuesday 16 December 2025.
The wettest day of December 2025 in Middletown-Harrisburg, PA: 0.64 in on Tuesday 2 December 2025.