Allentown, PA: January

31 January 2026: January 2026 averaged 24.6°F in Allentown, PA, the coldest January since 2014, 22nd coldest of 94.

January 2026

Mean temperature: 24.6°F; Coldest since 2014; 22nd coldest of 94
Precipitation: 2.52 in; Driest since 2025; 35th driest of 110

A normal January in Allentown, PA (1991 to 2020): a mean temperature of 29.4°F, between 23.2°F and 34.8°F in eight years of ten and 2.98 in of precipitation, between 1.70 in and 5.39 in in eight years of ten.

The mean temperature of every January in Allentown, PA since 1931: 24.6°F in 2026; the lowest is 18.6°F, in 1977.

Normal range, 23.2 to 34.8°F

Every year, ranked, as a table

Every January in Allentown, PA from 1912 to 2026, 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
2026	24.6	73	33	69	16.2	82	2.52	76	0
2025	25.2	66	33.4	66	17	75	0.86	105	0
2024	32.3	18	39.3	24	25.4	15	6.32	5	0
2023	38.3	1	45.4	2	31.1	2	4.07	27	0
2022	25.1	67	33.7	63	16.5	80	2.40	78	0
2021	31.2	27	38	36	24.3	23	1.99	87	0
2020	35.8	7	44.2	4	27.3	11	2.53	75	0
2019	30.3	34	38	36	22.5	35	4.70	20	0
2018	28.3	48	38.2	33	18.5	67	3.17	48	0
2017	34.7	9	41.6	12	27.8	8	3.39	41	0
2016	29.2	42	39	26	19.4	60	3.17	48	0
2015	25.9	63	34.1	60	17.6	73	2.72	64	0
2014	22.6	83	31.9	75	13.3	95	4.54	23	0
2013	32.2	19	39.8	20	24.5	20	3.99	29	0
2012	33.3	14	42.5	10	24	25	2.96	55	0
2011	23.6	77	31.9	75	15.2	88	2.67	67	0
2010	28.8	45	36.5	46	21.1	45	2.37	79	0
2009	23.3	79	31.4	80	15.2	88	2.00	86	0
2008	31.7	22	40.9	15	22.5	35	1.28	103	0
2007	33.2	16	41.3	13	25.1	17	2.81	58	0
2006	36.4	5	45.9	1	27	12	5.23	13	0
2005	26.8	58	34.1	60	19.4	60	5.38	12	0
2004	22	84	29	88	14.9	90	2.25	81	0
2003	23.6	77	30.6	82	16.5	80	1.40	101	0
2002	34.2	11	43.4	8	25	18	1.45	99	0
2001	27	56	35.3	51	18.8	65	2.65	69	0
2000	27.4	54	35.7	48	19.2	63	3.00	53	0
1999	30.3	34	38.8	29	21.8	41	5.44	11	0
1998	36.5	4	43.7	7	29.2	4	3.42	39	0
1997	27	56	34.5	57	19.6	58	3.38	44	0
1996	25.1	67	33.4	66	16.9	77	7.32	3	0
1995	34.3	10	41	14	27.6	9	3.49	37	0
1994	20.6	89	29	88	12.3	97	5.69	9	0
1993	33.3	14	40.7	17	25.9	14	1.98	88	0
1992	32.2	19	40	19	24.4	21	1.73	94	0
1991	29.5	39	38	36	21	48	2.77	61	0
1990	37.1	2	44.9	3	29.2	4	4.57	22	0
1989	33.4	12	41.8	11	25	18	1.79	91	0
1988	22.7	82	31.9	75	13.5	93	2.75	62	0
1987	27.8	52	34.6	55	20.9	50	3.89	32	0
1986	29.3	41	38	36	20.6	51	4.27	25	0
1985	24.9	71	31.9	75	17.9	70	0.84	106	0
1984	23	81	30.3	83	15.7	85	1.53	97	0
1983	30.2	36	36.9	44	23.5	29	2.84	57	0
1982	19.9	91	27.6	92	12.2	99	3.48	38	0
1981	23.2	80	30.8	81	15.5	86	0.67	110	0
1980	30.6	32	37.3	43	24	25	0.81	107	0
1979	28	49	34.1	60	21.8	41	8.42	1	0
1978	24.9	71	31.6	79	18.2	69	7.42	2	0
1977	18.6	94	26.2	94	11	102	1.42	100	0
1976	24.1	75	32.3	74	15.9	84	5.03	19	0
1975	31.6	23	38.9	28	24.3	23	5.17	14	0
1974	31.3	25	38.7	30	23.8	28	3.66	34	0
1973	30.7	31	39.5	22	21.9	40	3.58	36	0
1972	30.4	33	38.4	32	22.4	38	2.79	59	0
1971	22	84	29.3	87	14.6	91	2.73	63	0
1970	19.2	93	26.8	93	11.6	100	0.69	109	0
1969	27.9	51	34.8	53	21.1	45	1.47	98	0
1968	21.7	87	29.9	84	13.4	94	2.54	74	0
1967	31.3	25	39.6	21	22.9	33	1.76	93	0
1966	26.2	60	33.6	64	18.7	66	4.20	26	0
1965	24.2	74	32.5	72	16	83	2.70	65	0
1964	29.1	44	37.8	40	20.5	52	4.67	21	0
1963	23.9	76	32.5	72	15.4	87	3.00	53	0
1962	26.3	59	35.2	52	17.5	74	2.90	56	0
1961	21.1	88	29.9	84	12.3	97	3.32	45	0
1960	31.5	24	37.8	40	25.3	16	3.66	34	0
1959	28	49	36.6	45	19.3	62	2.58	72	0
1958	28.6	46	35.6	49	21.6	43	4.30	24	0
1957	25	70	33.4	66	16.7	79	1.87	90	0
1956	29.2	42	36.1	47	22.3	39	1.68	96	0
1955	27.1	55	34.6	55	19.5	59	0.71	108	0
1954	26.1	62	34.5	57	17.7	72	2.06	84	0
1953	33.4	12	40.1	18	26.6	13	6.16	6	0
1952	31.9	21	39.4	23	24.4	21	5.09	18	0
1951	31.1	28	39.2	25	23.1	32	4.05	28	0
1950	36.8	3	44.2	4	29.4	3	2.66	68	0
1949	35	8	42.7	9	27.4	10	6.01	8	0
1948	20	90	28.8	90	11.2	101	3.39	41	0
1947	32.5	17	40.9	15	24	25	3.78	33	0
1946	29.6	37	38.2	33	21	48	1.13	104	0
1945	19.5	92	28.6	91	10.4	103	3.17	48	0
1944	31	29	38.5	31	23.5	29	2.79	59	0
1943	28.6	46	34.4	59	22.9	33	3.17	48	0
1942	25.9	63	34.8	53	16.9	77	1.79	91	0
1941	26.2	60	32.6	71	19.8	57	3.24	47	0
1940	22	84	29.5	86	14.5	92	1.32	102	0
1939	27.6	53	35.4	50	19.9	56			0
1938	29.6	37	38.1	35	21.1	45	3.01	52	3
1937					29.1	6	5.47	10	6
1936	25.1	67	32.7	70	17	75	6.48	4	2
1935	25.7	65	33.5	65	17.9	70	2.63	70	3
1934	30.9	30	39	26	22.5	35	2.69	66	3
1933	36.2	6	44.2	4	27.9	7	1.73	94	3
1932					33.5	1	3.42	39	8
1931	29.4	40	37.7	42	21.4	44	2.04	85	2
1930					20	55	2.24	82	7
1929					19.1	64	3.39	41	6
1928					23.4	31	2.61	71	4
1927					20.2	54	2.56	73	12
1926					20.5	52	2.29	80	5
1925					12.9	96			6
1924							5.14	16	30
1923					18.3	68	5.11	17	8
1922							2.18	83	31
1919							2.50	77	31
1918							5.15	15	31
1916							1.94	89	31
1915							6.03	7	31
1914							3.93	31	31
1913							3.94	30	31
1912							3.25	46	31

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2023	38.3
1990	37.1
1950	36.8
1998	36.5
2006	36.4
1933	36.2
2020	35.8
1949	35
2017	34.7
1995	34.3

Coldest
Year	Mean, °F
1977	18.6
1970	19.2
1945	19.5
1982	19.9
1948	20
1994	20.6
1961	21.1
1968	21.7
2004	22
1971	22
More years share the last value

Wettest
Year	Precipitation, in
1979	8.42
1978	7.42
1996	7.32
1936	6.48
2024	6.32
1953	6.16
1915	6.03
1949	6.01
1994	5.69
1937	5.47

Driest
Year	Precipitation, in
1981	0.67
1970	0.69
1955	0.71
1980	0.81
1985	0.84
2025	0.86
1946	1.13
2008	1.28
1940	1.32
2003	1.40

The hottest, coldest and wettest days

Hottest day: 52°F; 8 January 2026
Coldest night: -9°F; 21 January 2026
Wettest day: 1.29 in; 25 January 2026

Every month, season and year

Months

Seasons

Years

Allentown, PA the day's answers

All-time records

Every answer in words

January 2026 brought 2.52 in of precipitation in Allentown, PA, the driest January since 2025, 35th driest of 110.
The hottest day of January 2026 in Allentown, PA: 52°F on Thursday 8 January 2026.
The coldest night of January 2026 in Allentown, PA: a low of -9°F on Wednesday 21 January 2026.
The wettest day of January 2026 in Allentown, PA: 1.29 in on Sunday 25 January 2026.