Allentown, PA: 2025

31 December 2025: 2025 averaged 52.3°F in Allentown, PA, the warmest year since 2024, tied 31st warmest of 98 (with 2022, 1983, 1975 and 1 other year).

2025

Mean temperature: 52.3°F; Warmest since 2024; 31st warmest of 98
Precipitation: 37.51 in; Driest since 2016; 16th driest of 108

A normal year in Allentown, PA (1991 to 2020): a mean temperature of 52.1°F, between 50.6°F and 54.3°F in eight years of ten and 45.67 in of precipitation, between 38.30 in and 57.30 in in eight years of ten.

The mean temperature of every year in Allentown, PA since 1925: 52.3°F in 2025; the highest is 54.6°F, in 2020 and 2012.

Normal range, 50.6 to 54.3°F

Every year, ranked, as a table

Every year in Allentown, PA from 1912 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	52.3	31	62.5	32	42.2	31	37.51	93	0
2024	54.2	5	64.5	4	43.9	7	42.06	66	0
2023	53.7	12	64.1	9	43.3	15	46.38	43	0
2022	52.3	31	63	27	41.6	53	46.47	40	0
2021	53.5	16	63.3	21	43.6	10	44.67	51	0
2020	54.6	1	64.7	3	44.5	3	50.13	24	0
2019	54.4	3	64.2	6	44.6	1	60.66	4	0
2018	53.9	10	63.2	23	44.6	1	66.96	3	0
2017	54.1	6	64.1	9	44	5	50.18	23	0
2016	54.3	4	65.4	1	43.2	17	36.82	94	0
2015	52.8	22	63.5	15	42	38	40.52	78	0
2014	50.6	77	60.9	69	40.3	86	44.72	50	0
2013	51.9	47	61.9	45	42	38	45.95	45	0
2012	54.6	1	64.9	2	44.3	4	41.02	76	0
2011	53.3	17	63.4	19	43.2	17	71.72	1	0
2010	52.9	20	63.3	21	42.5	28	50.62	21	0
2009	50.9	68	60.5	80	41.3	59	44.59	53	0
2008	51.5	59	62	44	41	70	51.52	16	0
2007	52.1	38	62.3	39	41.9	41	45.38	46	0
2006	53.6	14	63.9	13	43.3	15	49.29	27	0
2005	52.1	38	62.4	36	41.9	41	51.35	17	0
2004	51.6	55	61.1	65	42	38	51.59	15	0
2003	50.8	72	60.3	86	41.3	59	56.93	5	2
2002	52.6	26	63.2	23	41.9	41	39.40	84	0
2001	51.7	53	62.5	32	40.9	76	35.90	96	0
2000	50.3	89	60.3	86	40.3	86	44.83	49	0
1999	52.4	28	63.4	19	41.4	56	41.69	68	0
1998	54.1	6	64.2	6	44	5	39.62	82	0
1997	50.2	92	60.4	83	39.9	98	38.49	87	0
1996	49.6	95	59.4	98	39.9	98	56.87	6	0
1995	52	42	61.9	45	42.1	35	38.46	88	0
1994	52.1	38	62.4	36	41.8	48	48.82	29	0
1993	52	42	61.8	47	42.3	30	52.96	12	0
1992	51	65	60.1	90	41.9	41	38.71	86	0
1991	54	8	64.1	9	43.8	9	34.38	102	0
1990	54	8	64.1	9	43.9	7	44.27	55	0
1989	50.8	72	60.3	86	41.3	59	45.01	48	0
1988	51	65	61.1	65	41	70	39.42	83	0
1987	51.9	47	61.7	52	42.1	35	46.70	39	0
1986	51.6	55	61.3	58	41.9	41	43.20	64	0
1985	52.2	36	61.7	52	42.7	24	47.03	37	0
1984	52	42	61.2	60	42.9	21	52.41	14	0
1983	52.3	31	61.8	47	42.9	21	52.70	13	0
1982	50.6	77	59.9	94	41.3	59	43.40	63	0
1981	51.2	62	60.6	77	41.8	48	35.08	98	0
1980	52.8	22	62.2	42	43.4	14	29.82	107	0
1979	51.9	47	60.6	77	43.1	20	49.71	25	0
1978	50.7	76	59.9	94	41.4	56	45.99	44	0
1977	52	42	61.2	60	42.7	24	49.60	26	0
1976	50.5	83	60.4	83	40.6	83	39.90	79	0
1975	52.3	31	61.1	65	43.5	12	55.54	8	0
1974	51.5	59	60.7	74	42.2	31	48.19	32	0
1973	53	18	62.3	39	43.6	10	48.17	33	0
1972	50.3	89	59.7	96	41	70	55.85	7	0
1971	50.9	68	60.1	90	41.7	50	48.50	31	0
1970	50.3	89	59.5	97	41	70	41.59	71	0
1969	50.8	72	60.5	80	41.1	67	41.89	67	0
1968	50.5	83	61	68	40	95	38.43	89	0
1967	49	98	59.3	99	38.8	102	43.79	60	0
1966	50.4	86	60.8	73	40	95	38.28	91	0
1965	50.6	77	60.9	69	40.3	86	30.55	106	0
1964	51	65	61.8	47	40.3	86	34.74	101	0
1963	49.9	93	60.7	74	39.2	101	35.04	99	0
1962	49.9	93	60.1	90	39.8	100	41.58	72	0
1961	50.9	68	60.7	74	41	70	39.27	85	0
1960	50.4	86	60.2	89	40.6	83	46.81	38	0
1959	52.6	26	62.6	30	42.6	26	41.62	69	0
1958	49.6	95	59.1	100	40.1	92	44.64	52	0
1957	51.8	52	62.2	42	41.4	56	35.21	97	0
1956	50.4	86	60.1	90	40.7	80	46.42	42	0
1955	51.6	55	61.8	47	41.5	54	42.45	65	0
1954	51.5	59	61.8	47	41.2	65	38.33	90	1
1953	52.9	20	63.2	23	42.6	26	54.90	10	0
1952	51.9	47	61.6	56	42.1	35	67.69	2	0
1951	51.1	64	60.9	69	41.3	59	54.58	11	0
1950	50.6	77	60.5	80	40.8	78	40.77	77	0
1949	53.7	12	64.4	5	42.9	21	39.71	80	2
1948	50.6	77	61.2	60	40	95	43.49	62	0
1947	50.8	72	61.2	60	40.4	85	44.06	58	0
1946	52.3	31	63.5	15	41.1	67	41.53	73	0
1945	50.6	77	60.9	69	40.2	90	51.11	20	0
1944	51.2	62	61.6	56	40.7	80	34.11	103	0
1943	50.9	68	60.6	77	41.2	65	38.05	92	0
1942	51.7	53	61.3	58	42.2	31	55.13	9	0
1941	52.2	36	62.4	36	41.9	41			0
1940	49.3	97	58.4	101	40.1	92			0
1939	52.4	28	62.3	39	42.5	28	34.97	100	1
1938	53.6	14	64.2	6	42.2	31	51.14	19	25
1937	53	18	62.5	32	43.2	17	41.11	75	25
1936	52	42	62.5	32	41.5	54	43.85	59	26
1935	51.6	55	61.7	52	41	70	43.67	61	22
1934	50.5	83	60.4	83	40.2	90	47.22	36	22
1933	51.9	47	61.7	52	41.7	50	50.23	22	20
1932	52.8	22	63.1	26	41.7	50	39.64	81	28
1931	53.8	11	63.6	14	43.5	12	36.34	95	21
1930	52.8	22	63.5	15	41.1	67	29.67	108	29
1929	52.1	38	62.7	29	40.9	76	44.18	56	27
1928			62.6	30	41.3	59	45.24	47	51
1927					41.9	41	48.72	30	39
1926			61.2	60	40.1	92	46.43	41	49
1925	52.4	28	63	27	40.8	78	44.08	57	28
1924					40.7	80	44.38	54	57
1923			63.5	15					63
1922							33.17	105	165
1919							48.10	34	365
1918							33.58	104	365
1917							41.22	74	365
1916							41.61	70	366
1915							51.27	18	365
1913							49.06	28	365
1912							47.43	35	366

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2020	54.6
2012	54.6
2019	54.4
2016	54.3
2024	54.2
2017	54.1
1998	54.1
1991	54
1990	54
2018	53.9

Coldest
Year	Mean, °F
1967	49
1940	49.3
1996	49.6
1958	49.6
1963	49.9
1962	49.9
1997	50.2
2000	50.3
1972	50.3
1970	50.3

Wettest
Year	Precipitation, in
2011	71.72
1952	67.69
2018	66.96
2019	60.66
2003	56.93
1996	56.87
1972	55.85
1975	55.54
1942	55.13
1953	54.90

Driest
Year	Precipitation, in
1930	29.67
1980	29.82
1965	30.55
1922	33.17
1918	33.58
1944	34.11
1991	34.38
1964	34.74
1939	34.97
1963	35.04

The hottest, coldest and wettest days

Hottest day: 98°F; 24 June 2025
Coldest night: -8°F; 22 January 2025
Wettest day: 1.88 in; 4 September 2025

Month by month

Month	Mean temperature	Precipitation
January	25.2°F 28th coldest of 93	0.86 in 6th driest of 109
February	31.1°F 42nd warmest of 94	2.47 in 49th driest of 110
March	44.8°F 8th warmest of 99	3.68 in 49th wettest of 109
April	52.2°F 27th warmest of 101	2.05 in 20th driest of 110
May	60.8°F 49th warmest of 103	10.45 in 2nd wettest of 109
June	71.4°F 19th warmest of 101	3.26 in 44th driest of 109
July	77.3°F 10th warmest of 102	3.93 in 40th driest of 110
August	70°F 16th coldest of 103	1.60 in 9th driest of 110
September	67.6°F 13th warmest of 102	2.66 in 37th driest of 110
October	54.4°F 41st warmest of 99	2.40 in 41st driest of 112
November	42.7°F 47th coldest of 96	1.61 in 18th driest of 112
December	29°F 18th coldest of 95	2.54 in 37th driest of 111

Hot days and freezes

Allentown, PA has had 16 days at 90°F or above in 2025 through 31 December, the most by that date since 2024, tied 51st most of 101 (with 2013, 1957, 1938 and 2 other years).
Allentown, PA has had 131 freezing nights (a low of 32°F or below) in 2025 through 31 December, the most by that date since 2013, tied 22nd most of 102 (with 1972).
The first freeze of fall 2025 in Allentown, PA came on Friday 10 October 2025, the earliest since 2003, tied 27th earliest of 101 (with 1989 and 1972).
The last freeze of spring 2025 in Allentown, PA came on Friday 18 April 2025, the latest since 2024, tied 67th latest of 103 (with 1962, 1948 and 1943).

Daily records set

Date	Record	Value	Before	Check
28 September	Warmest day	86°F	85°F 1941	Provisional
25 July	Warmest day	96°F	95°F 2016, 1999, 1949, 1939	Provisional
23 June	Warmest day	97°F	96°F 2024	Provisional

Daily records set and not listed: 0

Every month, season and year

Months

Seasons

Years

2025
2026

Allentown, PA the day's answers

All-time records

Every answer in words

2025 brought 37.51 in of precipitation in Allentown, PA, the driest year since 2016, 16th driest of 108.
The hottest day of 2025 in Allentown, PA: 98°F on Tuesday 24 June 2025.
The coldest night of 2025 in Allentown, PA: a low of -8°F on Wednesday 22 January 2025.
The wettest day of 2025 in Allentown, PA: 1.88 in on Thursday 4 September 2025.