Philadelphia Center City, PA: September

30 September 2026: September 2026 averaged 73.3°F in Philadelphia Center City, PA (1 day missing), the warmest September since 2019, 12th warmest of 86.

September 2026

Mean temperature: 73.3°F; Warmest since 2019; 12th warmest of 86
Precipitation: 7.40 in; Wettest since 2018; 6th wettest of 49

A normal September in Philadelphia Center City, PA (1991 to 2020): a mean temperature of 71.2°F, between 68.1°F and 74.5°F in eight years of ten.

The mean temperature of every September in Philadelphia Center City, PA since 1940: 73.3°F in 2026; the highest is 77°F, in 2005.

Normal range, 68.1 to 74.5°F

Every year, ranked, as a table

Every September in Philadelphia Center City, PA from 1940 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	73.3	12	80.7	21	66	7	7.40	6	1
2025	73	15	81.7	13	64.3	20			0
2024	71.3	30	78.7	37	63.8	25			0
2023	71.8	23	80.5	22	63	35			0
2022	72.3	20	80.9	20	63.8	25			0
2021	73.1	13	81.6	15	64.5	16			0
2020	70.7	40	78.9	33	62.5	42			0
2019	74.6	5	84.2	2	65	10			3
2018	74	8	81.3	16	66.8	2	12.55	2	0
2017	72.6	19	81.1	19	64.1	23			0
2016					66.1	6	2.10	36	4
2015	74.8	3	83.2	5	66.4	4	5.01	14	0
2014	71.2	34	79.5	28	62.9	37	2.43	32	0
2013	69.1	59	77.8	50	60.3	72	2.23	34	0
2012	71.1	35	79.4	30	62.8	39	6.07	9	0
2011	71.6	26	78.7	37	64.4	17	12.00	3	0
2010	73.5	11	82.2	10	64.8	12	2.37	33	0
2009	68.1	71	74.9	80	61.2	57	3.61	23	0
2008	71.7	25	79.5	28	63.8	25	4.97	15	0
2007	72.1	22	80.4	24	63.7	28	1.93	40	0
2006	68.2	70	75.3	77	61.1	60	6.06	10	0
2005	77	1	87.4	1	66.6	3	1.09	48	0
2004	71.5	27	79.6	27	63.4	30			1
2003	71.8	23	78.8	34	64.8	12	5.36	13	0
2002	74.1	7	83.1	7	65	10	3.29	26	0
2001	69.7	50	78.4	43	61	62	2.19	35	0
2000	68	72	76.4	67	59.6	79	7.43	5	0
1999	71.3	30	79	32	63.5	29	13.45	1	0
1998	74.5	6	83	8	66	7	2.00	38	0
1997	69.7	50	77.9	47	61.5	52	1.56	42	0
1996	70	44	77.5	54	62.4	44	5.80	12	0
1995	70.6	41	79.1	31	62	47	3.97	18	0
1994	68.9	61	77.9	47	59.9	75	1.98	39	0
1993	67.9	75	76	73	59.7	77	7.22	7	0
1992	67.8	76	75	79	60.6	66			0
1991	68.9	61	77	58	60.8	64			0
1990	68.4	68	75.5	76	61.2	57			0
1989	70.1	42	77.6	52	62.7	40			0
1988	68.4	68	76.2	70	60.6	66			0
1987	69.8	49	76.6	64	62.9	37			0
1986	69.7	50	77.6	52	61.8	49			0
1985	73.6	10	82.4	9	64.8	12			0
1984	68.8	64	77	58	60.7	65			0
1983	73.9	9	83.4	4	64.4	17			0
1982	68.8	64	76.6	64	61	62			0
1981	68.8	64	76.1	71	61.5	52			0
1980	73.1	13	81.9	12	64.4	17			0
1979	68	72	75.7	74	60.3	72			0
1978	67.6	78	76.5	66	58.8	83	1.15	46	0
1977	70.1	42	77.2	56	63	35	3.71	21	0
1976	69.2	56	77.2	56	61.2	57	2.09	37	0
1975	67.1	81	74.1	83	60.1	74	7.48	4	0
1974	67.8	76	75.1	78	60.4	71	4.97	15	0
1973	73	15	81.3	16	64.7	15			0
1972	71.4	28	78.5	40	64.2	22			0
1971	72.2	21	78.8	34	65.7	9			0
1970	74.7	4	83.2	5	66.2	5			0
1969	71.1	35	78.8	34	63.4	30			0
1968	73	15	81.7	13	64.3	20			0
1967	68.8	64	77	58	60.6	66			0
1966	68.9	61	76.3	69	61.4	54			0
1965	71.3	30	80.5	22	62.2	45			0
1964	69.2	56	78.5	40	59.8	76	3.04	28	0
1963	65.7	84	74.4	81	57	87	5.89	11	0
1962	65.7	84	73.6	85	57.7	86			0
1961	75.3	2	83.6	3	67	1			0
1960	69.9	46	77.3	55	62.5	42			0
1959	73	15	82.2	10	63.9	24			0
1958	67.6	78	76.1	71	59.1	81			0
1957	70.9	37	78.6	39	63.2	33	2.71	31	0
1956	66.9	82	74.1	83	59.7	77	2.75	30	0
1955	69	60	76.4	67	61.7	50	1.41	43	0
1954	69.9	46	77.8	50	62.1	46	3.51	24	0
1953	70.9	37	79.8	26	62	47	1.12	47	0
1952	69.9	46	78.4	43	61.4	54	3.88	20	0
1951	69.4	54	78.2	45	60.5	70	1.39	44	0
1950	64.8	86	71	86	58.5	85	3.36	25	0
1949	66.6	83	74.4	81	58.8	83	3.63	22	0
1948	69.4	54	78.1	46	60.6	66	1.24	45	0
1947	69.2	56	76.8	62	61.6	51	2.91	29	0
1946	71.4	28	80.2	25	62.6	41	3.22	27	0
1945	70.9	37	78.5	40	63.3	32	3.96	19	0
1944	70	44	76.9	61	63.1	34	6.08	8	0
1943	68	72	76.8	62	59.2	80			0
1942	69.5	53	77.9	47	61.1	60	1.68	41	0
1941	71.3	30	81.3	16	61.3	56	0.51	49	0
1940	67.3	80	75.7	74	59	82	4.58	17	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2005	77
1961	75.3
2015	74.8
1970	74.7
2019	74.6
1998	74.5
2002	74.1
2018	74
1983	73.9
1985	73.6

Coldest
Year	Mean, °F
1950	64.8
1963	65.7
1962	65.7
1949	66.6
1956	66.9
1975	67.1
1940	67.3
1978	67.6
1958	67.6
1992	67.8
More years share the last value

Wettest
Year	Precipitation, in
1999	13.45
2018	12.55
2011	12.00
1975	7.48
2000	7.43
2026	7.40
1993	7.22
1944	6.08
2012	6.07
2006	6.06

Driest
Year	Precipitation, in
1941	0.51
2005	1.09
1953	1.12
1978	1.15
1948	1.24
1951	1.39
1955	1.41
1997	1.56
1942	1.68
2007	1.93

The hottest, coldest and wettest days

Hottest day: 94°F; 2 September 2026
Coldest night: 53°F; 28 September 2026, 25 September 2026
Wettest day: 2.38 in; 29 September 2026

Every month, season and year

Months

Seasons

Years

Philadelphia Center City, PA the day's answers

All-time records

Every answer in words

September 2026 brought 7.40 in of precipitation in Philadelphia Center City, PA, the wettest September since 2018 (2019 excluded: 6 of 30 days missing; 2020 excluded: 5 of 30 days missing; 2021 excluded: 6 of 30 days missing; 4 more years excluded for missing days), 6th wettest of 49.
The hottest day of September 2026 in Philadelphia Center City, PA: 94°F on Wednesday 2 September 2026.
The coldest night of September 2026 in Philadelphia Center City, PA: a low of 53°F on Monday 28 September 2026 and Friday 25 September 2026.
The wettest day of September 2026 in Philadelphia Center City, PA: 2.38 in on Tuesday 29 September 2026.