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 1921

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1921 1-Month	66.5°F (19.2°C)	61.7°F (16.5°C)	4.8°F (2.7°C)	124th Coolest	Coolest since: 1920	1918
September 1921 1-Month	66.5°F (19.2°C)	61.7°F (16.5°C)	4.8°F (2.7°C)	5th Warmest	Warmest to Date	1961
Aug–Sep 1921 2-Month	66.2°F (19.0°C)	65.1°F (18.4°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1920	1963
	66.2°F (19.0°C)	65.1°F (18.4°C)	1.1°F (0.6°C)	36th Warmest	Warmest since: 1911	2016
	Ties: 1911, 1925, 1932, 1944, 1945
Jul–Sep 1921 3-Month	68.8°F (20.4°C)	66.8°F (19.3°C)	2.0°F (1.1°C)	112th Coolest	Coolest since: 1920	1924, 1962, 1963, 1976
	68.8°F (20.4°C)	66.8°F (19.3°C)	2.0°F (1.1°C)	17th Warmest	Warmest since: 1901	2016
	Ties: 1901, 1936, 1961
Jun–Sep 1921 4-Month	68.6°F (20.3°C)	66.6°F (19.2°C)	2.0°F (1.1°C)	116th Coolest	Coolest since: 1920	1924
	68.6°F (20.3°C)	66.6°F (19.2°C)	2.0°F (1.1°C)	13th Warmest	Warmest since: 1900	2005, 2016
	Ties: 1934
May–Sep 1921 5-Month	66.5°F (19.2°C)	64.9°F (18.3°C)	1.6°F (0.9°C)	108th Coolest	Coolest since: 1920	1924
	66.5°F (19.2°C)	64.9°F (18.3°C)	1.6°F (0.9°C)	21st Warmest	Warmest since: 1911	2018
	Ties: 1933, 1955, 1998
Apr–Sep 1921 6-Month	64.3°F (17.9°C)	61.8°F (16.6°C)	2.5°F (1.3°C)	125th Coolest	Coolest since: 1920	1907, 1924
Apr–Sep 1921 6-Month	64.3°F (17.9°C)	61.8°F (16.6°C)	2.5°F (1.3°C)	4th Warmest	Warmest to Date	2010
Mar–Sep 1921 7-Month	61.6°F (16.4°C)	58.1°F (14.5°C)	3.5°F (1.9°C)	127th Coolest	Coolest since: 1920	1924
	61.6°F (16.4°C)	58.1°F (14.5°C)	3.5°F (1.9°C)	2nd Warmest	Warmest to Date	2010
	Ties: 2012
Feb–Sep 1921 8-Month	57.6°F (14.2°C)	54.1°F (12.3°C)	3.5°F (1.9°C)	127th Coolest	Coolest since: 1920	1924
Feb–Sep 1921 8-Month	57.6°F (14.2°C)	54.1°F (12.3°C)	3.5°F (1.9°C)	2nd Warmest	Warmest to Date	2012
Jan–Sep 1921 9-Month	54.3°F (12.4°C)	50.9°F (10.5°C)	3.4°F (1.9°C)	126th Coolest	Coolest since: 1920	1940
Jan–Sep 1921 9-Month	54.3°F (12.4°C)	50.9°F (10.5°C)	3.4°F (1.9°C)	3rd Warmest	Warmest to Date	2012
Dec 1920–Sep 1921 10-Month	52.0°F (11.1°C)	48.8°F (9.3°C)	3.2°F (1.8°C)	123rd Coolest	Coolest since: 1920	1904
Dec 1920–Sep 1921 10-Month	52.0°F (11.1°C)	48.8°F (9.3°C)	3.2°F (1.8°C)	5th Warmest	Warmest to Date	2012
Nov 1920–Sep 1921 11-Month	50.7°F (10.4°C)	47.9°F (8.8°C)	2.8°F (1.6°C)	122nd Coolest	Coolest since: 1920	1904
	50.7°F (10.4°C)	47.9°F (8.8°C)	2.8°F (1.6°C)	6th Warmest	Warmest to Date	2012
	Ties: 2017
Oct 1920–Sep 1921 12-Month	51.0°F (10.6°C)	48.1°F (8.9°C)	2.9°F (1.7°C)	123rd Coolest	Coolest since: 1920	1904
	51.0°F (10.6°C)	48.1°F (8.9°C)	2.9°F (1.7°C)	5th Warmest	Warmest to Date	2012
	Ties: 1998
Apr 1920–Sep 1921 18-Month	54.2°F (12.3°C)	52.7°F (11.5°C)	1.5°F (0.8°C)	113th Coolest	Coolest since: 1920	1918
	54.2°F (12.3°C)	52.7°F (11.5°C)	1.5°F (0.8°C)	15th Warmest	Warmest to Date	2012
	Ties: 1949, 2000, 2010, 2013
Oct 1919–Sep 1921 24-Month	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	88th Coolest	Coolest since: 1920	1905
	48.7°F (9.3°C)	48.1°F (8.9°C)	0.6°F (0.4°C)	39th Warmest	Warmest since: 1901	2017
	Ties: 1901, 1930, 1938, 1942, 1943
Oct 1918–Sep 1921 36-Month	49.1°F (9.5°C)	48.1°F (8.9°C)	1.0°F (0.6°C)	97th Coolest	Coolest since: 1920	1979
	49.1°F (9.5°C)	48.1°F (8.9°C)	1.0°F (0.6°C)	29th Warmest	Warmest to Date	2018
	Ties: 1923, 1987, 2003, 2016
Oct 1917–Sep 1921 48-Month	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	64th Coolest	Coolest since: 1920	1907
	48.3°F (9.1°C)	48.1°F (8.9°C)	0.2°F (0.2°C)	61st Warmest	Warmest since: 1901	2019
	Ties: 1948, 1995
Oct 1916–Sep 1921 60-Month	47.9°F (8.8°C)	48.1°F (8.9°C)	-0.2°F (-0.1°C)	36th Coolest	Coolest since: 1920	1908
	47.9°F (8.8°C)	48.1°F (8.9°C)	-0.2°F (-0.1°C)	88th Warmest	Warmest since: 1915	2020
	Ties: 1910, 1915, 1944, 1960, 1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings