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Topics / Climate / United States / Pennsylvania

Was September normal in Pennsylvania?

September 2026 · 67 counties · data family: climatedata.dev

Warmer than normal

64.8°FStatewide average temperature, September 2026

+2.0°F against the 1991–2020 normal of 62.8°F
16th warmest September of 132 since 1895
Of 67 counties: 16 much warmer, 50 warmer, 1 near normal
Furthest above normal: Armstrong County (+3.8°F); least: Pike County (+0.3°F)
Precipitation 5.20 in, 121% of normal: wetter than normal

Every Pennsylvania county, September 2026September 2026 was warmer than normal in every county with a figure: 16 much warmer, 50 warmer, 1 near normal; furthest above normal Armstrong County (+3.8°F), least Pike County (+0.3°F).Choose a county to see its answer. The colour shows how far each county was from its own 1991–2020 normal.

+3 to +4°F 9
+2 to +3°F 22
+1 to +2°F 29
within 1°F 7
−1 to −2°F 0

Much warmer than normal 16
Warmer than normal 50
Near normal 1
Cooler than normal 0
Much cooler than normal 0

Every September since 1895, Pennsylvania statewideSeptember 2026 averaged 64.8°F, +2.0°F against the 1991–2020 normal: the 16th warmest September of 132 since 1895.

Show the numbers (132 rows)

Year	September average
2026	64.8°F
2025	64.2°F
2024	64.0°F
2023	63.6°F
2022	63.0°F
2021	64.3°F
2020	62.1°F
2019	65.1°F
2018	66.7°F
2017	63.8°F
2016	66.2°F
2015	66.6°F
2014	62.5°F
2013	61.0°F
2012	62.0°F
2011	64.4°F
2010	63.6°F
2009	61.4°F
2008	63.4°F
2007	64.4°F
2006	60.1°F
2005	65.5°F
2004	64.1°F
2003	61.7°F
2002	64.9°F
2001	60.4°F
2000	60.6°F
1999	62.8°F
1998	64.7°F
1997	60.4°F
1996	61.9°F
1995	60.4°F
1994	60.3°F
1993	60.6°F
1992	60.6°F
1991	60.9°F
1990	60.8°F
1989	61.7°F
1988	59.7°F
1987	61.7°F
1986	61.9°F
1985	63.1°F
1984	59.0°F
1983	62.4°F
1982	61.1°F
1981	60.2°F
1980	64.0°F
1979	61.3°F
1978	62.3°F
1977	63.4°F
1976	59.0°F
1975	57.9°F
1974	59.1°F
1973	62.6°F
1972	62.6°F
1971	65.1°F
1970	64.7°F
1969	61.4°F
1968	62.8°F
1967	58.8°F
1966	58.7°F
1965	63.7°F
1964	61.1°F
1963	57.9°F
1962	57.4°F
1961	67.1°F
1960	63.3°F
1959	65.0°F
1958	60.9°F
1957	62.2°F
1956	58.2°F
1955	61.5°F
1954	62.5°F
1953	61.8°F
1952	61.6°F
1951	61.1°F
1950	59.1°F
1949	58.0°F
1948	62.2°F
1947	62.9°F
1946	62.8°F
1945	64.4°F
1944	62.0°F
1943	59.8°F
1942	61.7°F
1941	63.7°F
1940	59.0°F
1939	63.4°F
1938	59.6°F
1937	59.2°F
1936	63.9°F
1935	59.5°F
1934	64.0°F
1933	64.0°F
1932	62.8°F
1931	66.8°F
1930	65.4°F
1929	63.4°F
1928	58.0°F
1927	62.6°F
1926	61.8°F
1925	65.1°F
1924	57.4°F
1923	62.4°F
1922	64.0°F
1921	66.5°F
1920	62.1°F
1919	62.3°F
1918	56.8°F
1917	57.5°F
1916	60.5°F
1915	64.2°F
1914	59.2°F
1913	60.2°F
1912	63.8°F
1911	62.8°F
1910	63.4°F
1909	60.4°F
1908	63.5°F
1907	62.6°F
1906	65.0°F
1905	61.8°F
1904	61.7°F
1903	61.4°F
1902	60.7°F
1901	61.7°F
1900	66.1°F
1899	59.9°F
1898	64.0°F
1897	61.5°F
1896	60.5°F
1895	64.8°F

All 67 counties, September 2026

Record rank: 1 is the warmest September on record for that county.


1	Armstrong	67.0°F	+3.8°F	7 of 132	Much warmer than normal
2	Butler	66.8°F	+3.4°F	7 of 132	Much warmer than normal
3	Jefferson	64.2°F	+3.3°F	7 of 132	Much warmer than normal
4	Mercer	65.9°F	+3.3°F	6 of 132	Much warmer than normal
5	Clarion	65.2°F	+3.2°F	6 of 132	Much warmer than normal
6	Indiana	65.5°F	+3.1°F	11 of 132	Much warmer than normal
7	Allegheny	68.0°F	+3.0°F	11 of 132	Much warmer than normal
8	Lawrence	66.9°F	+3.0°F	7 of 132	Much warmer than normal
9	Venango	65.2°F	+3.0°F	6 of 132	Much warmer than normal
10	Bedford	66.4°F	+2.9°F	14 of 132	Warmer than normal
11	Elk	63.0°F	+2.9°F	8 of 132	Much warmer than normal
12	Beaver	67.4°F	+2.8°F	11 of 132	Much warmer than normal
13	Cambria	63.7°F	+2.8°F	14 of 132	Warmer than normal
14	Crawford	64.6°F	+2.8°F	7 of 132	Much warmer than normal
15	Greene	67.5°F	+2.8°F	19 of 132	Warmer than normal
16	Westmoreland	66.5°F	+2.8°F	17 of 132	Warmer than normal
17	Clearfield	63.8°F	+2.7°F	10 of 132	Much warmer than normal
18	Somerset	63.4°F	+2.7°F	16 of 132	Warmer than normal
19	Fulton	67.2°F	+2.6°F	15 of 132	Warmer than normal
20	Washington	67.3°F	+2.6°F	18 of 132	Warmer than normal
21	Blair	65.1°F	+2.5°F	15 of 132	Warmer than normal
22	McKean	61.8°F	+2.5°F	11 of 132	Much warmer than normal
23	Fayette	65.8°F	+2.4°F	23 of 132	Warmer than normal
24	Forest	63.4°F	+2.4°F	10 of 132	Much warmer than normal
25	Cameron	63.1°F	+2.1°F	16 of 132	Warmer than normal
26	Centre	64.2°F	+2.1°F	18 of 132	Warmer than normal
27	Huntingdon	66.0°F	+2.1°F	17 of 132	Warmer than normal
28	York	68.1°F	+2.1°F	13 of 132	Much warmer than normal
29	Erie	64.0°F	+2.0°F	17 of 132	Warmer than normal
30	Franklin	67.4°F	+2.0°F	17 of 132	Warmer than normal
31	Warren	62.6°F	+2.0°F	15 of 132	Warmer than normal
32	Adams	67.7°F	+1.9°F	18 of 132	Warmer than normal
33	Lancaster	68.2°F	+1.9°F	14 of 132	Warmer than normal
34	Potter	61.3°F	+1.9°F	22 of 132	Warmer than normal
35	Mifflin	65.8°F	+1.8°F	22 of 132	Warmer than normal
36	Berks	67.2°F	+1.7°F	19 of 132	Warmer than normal
37	Chester	68.4°F	+1.7°F	17 of 132	Warmer than normal
38	Cumberland	67.5°F	+1.7°F	20 of 132	Warmer than normal
39	Dauphin	66.8°F	+1.7°F	20 of 132	Warmer than normal
40	Lehigh	66.6°F	+1.7°F	20 of 132	Warmer than normal
41	Northumberland	65.3°F	+1.7°F	19 of 132	Warmer than normal
42	Snyder	65.7°F	+1.7°F	23 of 132	Warmer than normal
43	Bucks	67.8°F	+1.6°F	18 of 132	Warmer than normal
44	Clinton	63.7°F	+1.6°F	25 of 132	Warmer than normal
45	Juniata	66.3°F	+1.6°F	22 of 132	Warmer than normal
46	Lebanon	66.8°F	+1.6°F	22 of 132	Warmer than normal
47	Perry	66.7°F	+1.6°F	20 of 132	Warmer than normal
48	Schuylkill	64.5°F	+1.6°F	22 of 132	Warmer than normal
49	Union	65.0°F	+1.6°F	23 of 132	Warmer than normal
50	Carbon	63.0°F	+1.5°F	20 of 132	Warmer than normal
51	Columbia	64.0°F	+1.5°F	25 of 132	Warmer than normal
52	Montour	65.0°F	+1.5°F	24 of 132	Warmer than normal
53	Northampton	65.7°F	+1.5°F	19 of 132	Warmer than normal
54	Tioga	61.3°F	+1.5°F	25 of 132	Warmer than normal
55	Delaware	69.7°F	+1.4°F	21 of 132	Warmer than normal
56	Lycoming	63.3°F	+1.4°F	24 of 132	Warmer than normal
57	Montgomery	68.5°F	+1.4°F	21 of 132	Warmer than normal
58	Luzerne	62.6°F	+1.3°F	23 of 132	Warmer than normal
59	Philadelphia	69.7°F	+1.1°F	22 of 132	Warmer than normal
60	Monroe	62.1°F	+1.0°F	25 of 132	Warmer than normal
61	Lackawanna	61.6°F	+0.9°F	30 of 132	Warmer than normal
62	Sullivan	59.9°F	+0.5°F	43 of 132	Warmer than normal
63	Susquehanna	61.0°F	+0.5°F	42 of 132	Warmer than normal
64	Wayne	60.8°F	+0.5°F	33 of 132	Warmer than normal
65	Wyoming	61.7°F	+0.5°F	41 of 132	Warmer than normal
66	Bradford	61.1°F	+0.3°F	46 of 132	Near normal
67	Pike	61.3°F	+0.3°F	31 of 132	Warmer than normal

Get this data

This page's numbers, as JSON:

curl https://visualizedata.org/data/topics/climate/us-pa.json

The climatedata.dev API it comes from (live, no key; every month since 1895 with its normal, anomaly and rank):

curl "https://api.climatedata.dev/v1/us-climate/tavg/us-pa.json"

Open the JSON

What this can't tell you

A statewide average is not the average of its counties: NOAA computes it from its own grid, weighted by area.
The most recent months are preliminary and NOAA revises them in the next release.

How the answer is decided

Each month is ranked against the same month in every year on record (since 1895 for most places). The top tenth of the record is 'much warmer than normal', the top third 'warmer', the middle third 'near normal'. Counties are coloured by the same five words.

Sources

climatedata.dev us-climate, version 2026-10-25.6c7474e6d8 (U.S. public domain)
NOAA Monthly U.S. Climate Divisional Database (nClimDiv), statewide and national files (U.S. public domain)
climatedata.dev county-climate, version 2026-10-25.b4bbb5298a (U.S. public domain)
U.S. Census Bureau TIGERweb, counties (generalised) (U.S. public domain)
Built 2026-10-26. Download every county's answer (JSON)

Every topic for one county: How's Hennepin County?