Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pennsylvania

Average Temperature Rankings, September 1931

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1931 1-Month	66.8°F (19.3°C)	61.7°F (16.5°C)	5.1°F (2.8°C)	127th Coolest	Coolest since: 1930	1918
September 1931 1-Month	66.8°F (19.3°C)	61.7°F (16.5°C)	5.1°F (2.8°C)	2nd Warmest	Warmest to Date	1961
Aug–Sep 1931 2-Month	68.0°F (20.0°C)	65.1°F (18.4°C)	2.9°F (1.6°C)	119th Coolest	Coolest since: 1930	1963
Aug–Sep 1931 2-Month	68.0°F (20.0°C)	65.1°F (18.4°C)	2.9°F (1.6°C)	10th Warmest	Warmest since: 1906	2016
Jul–Sep 1931 3-Month	69.8°F (21.0°C)	66.8°F (19.3°C)	3.0°F (1.7°C)	124th Coolest	Coolest since: 1930	1924, 1962, 1963, 1976
Jul–Sep 1931 3-Month	69.8°F (21.0°C)	66.8°F (19.3°C)	3.0°F (1.7°C)	5th Warmest	Warmest since: 1900	2016
Jun–Sep 1931 4-Month	68.9°F (20.5°C)	66.6°F (19.2°C)	2.3°F (1.3°C)	119th Coolest	Coolest since: 1930	1924
Jun–Sep 1931 4-Month	68.9°F (20.5°C)	66.6°F (19.2°C)	2.3°F (1.3°C)	10th Warmest	Warmest since: 1900	2005, 2016
May–Sep 1931 5-Month	66.7°F (19.3°C)	64.8°F (18.2°C)	1.9°F (1.1°C)	113th Coolest	Coolest since: 1930	1924
	66.7°F (19.3°C)	64.8°F (18.2°C)	1.9°F (1.1°C)	16th Warmest	Warmest since: 1911	2018
	Ties: 1936, 2005, 2021
Apr–Sep 1931 6-Month	63.3°F (17.4°C)	61.8°F (16.6°C)	1.5°F (0.8°C)	107th Coolest	Coolest since: 1930	1907, 1924
	63.3°F (17.4°C)	61.8°F (16.6°C)	1.5°F (0.8°C)	22nd Warmest	Warmest since: 1921	2010
	Ties: 1906, 1941, 1944
Mar–Sep 1931 7-Month	59.1°F (15.1°C)	58.1°F (14.5°C)	1.0°F (0.6°C)	99th Coolest	Coolest since: 1930	1924
	59.1°F (15.1°C)	58.1°F (14.5°C)	1.0°F (0.6°C)	30th Warmest	Warmest since: 1922	2010
	Ties: 1900, 1910, 1922, 1949, 1995, 2006, 2007
Feb–Sep 1931 8-Month	55.3°F (12.9°C)	54.2°F (12.3°C)	1.1°F (0.6°C)	95th Coolest	Coolest since: 1929	1924
	55.3°F (12.9°C)	54.2°F (12.3°C)	1.1°F (0.6°C)	34th Warmest	Warmest since: 1930	2012
	Ties: 1919, 1939, 1957, 1973
Jan–Sep 1931 9-Month	52.2°F (11.2°C)	51.0°F (10.6°C)	1.2°F (0.6°C)	100th Coolest	Coolest since: 1930	1940
	52.2°F (11.2°C)	51.0°F (10.6°C)	1.2°F (0.6°C)	29th Warmest	Warmest since: 1930	2012
	Ties: 1911, 1913, 1930, 1939, 1987
Dec 1930–Sep 1931 10-Month	49.7°F (9.8°C)	48.8°F (9.3°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1929	1904
	49.7°F (9.8°C)	48.8°F (9.3°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1930	2012
	Ties: 1906, 1938, 1942
Nov 1930–Sep 1931 11-Month	48.8°F (9.3°C)	47.9°F (8.8°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1929	1904
Nov 1930–Sep 1931 11-Month	48.8°F (9.3°C)	47.9°F (8.8°C)	0.9°F (0.5°C)	40th Warmest	Warmest since: 1930	2012
Oct 1930–Sep 1931 12-Month	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	82nd Coolest	Coolest since: 1929	1904
	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	46th Warmest	Warmest since: 1930	2012
	Ties: 1903, 1906, 1922, 1937, 1974, 1990
Apr 1930–Sep 1931 18-Month	53.4°F (11.9°C)	52.7°F (11.5°C)	0.7°F (0.4°C)	90th Coolest	Coolest since: 1930	1918
	53.4°F (11.9°C)	52.7°F (11.5°C)	0.7°F (0.4°C)	38th Warmest	Warmest since: 1922	2012
	Ties: 1898, 1900, 1937, 1960, 1988
Oct 1929–Sep 1931 24-Month	48.8°F (9.3°C)	48.1°F (8.9°C)	0.7°F (0.4°C)	91st Coolest	Coolest since: 1930	1905
	48.8°F (9.3°C)	48.1°F (8.9°C)	0.7°F (0.4°C)	36th Warmest	Warmest since: 1922	2017
	Ties: 1974, 1988
Oct 1928–Sep 1931 36-Month	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	86th Coolest	Coolest since: 1930	1979
	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	40th Warmest	Warmest since: 1923	2018
	Ties: 1900, 1922, 1985, 1998, 2005
Oct 1927–Sep 1931 48-Month	48.6°F (9.2°C)	48.1°F (8.9°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1930	1907
	48.6°F (9.2°C)	48.1°F (8.9°C)	0.5°F (0.3°C)	48th Warmest	Warmest since: 1922	2019
	Ties: 1901, 1987, 1990
Oct 1926–Sep 1931 60-Month	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	66th Coolest	Coolest since: 1930	1908
	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	58th Warmest	Warmest since: 1925	2020
	Ties: 1900, 1937, 1942, 1947, 1948, 1958, 1977, 1986

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings