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, December 2020

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 2020 1-Month	32.1°F (0.1°C)	28.9°F (-1.7°C)	3.2°F (1.8°C)	97th Coolest	Coolest since: 2017	1989
	32.1°F (0.1°C)	28.9°F (-1.7°C)	3.2°F (1.8°C)	32nd Warmest	Warmest since: 2019	2015
	Ties: 1997
Nov–Dec 2020 2-Month	38.4°F (3.6°C)	34.1°F (1.2°C)	4.3°F (2.4°C)	118th Coolest	Coolest since: 2019	1917
Nov–Dec 2020 2-Month	38.4°F (3.6°C)	34.1°F (1.2°C)	4.3°F (2.4°C)	11th Warmest	Warmest since: 2015	2015
Oct–Dec 2020 3-Month	43.0°F (6.1°C)	39.6°F (4.2°C)	3.4°F (1.9°C)	117th Coolest	Coolest since: 2019	1917
	43.0°F (6.1°C)	39.6°F (4.2°C)	3.4°F (1.9°C)	12th Warmest	Warmest since: 2015	2015
	Ties: 1941
Sep–Dec 2020 4-Month	47.8°F (8.8°C)	45.1°F (7.3°C)	2.7°F (1.5°C)	114th Coolest	Coolest since: 2019	1917
Sep–Dec 2020 4-Month	47.8°F (8.8°C)	45.1°F (7.3°C)	2.7°F (1.5°C)	15th Warmest	Warmest since: 2016	2015
Aug–Dec 2020 5-Month	52.6°F (11.4°C)	49.8°F (9.9°C)	2.8°F (1.5°C)	119th Coolest	Coolest since: 2019	1917
Aug–Dec 2020 5-Month	52.6°F (11.4°C)	49.8°F (9.9°C)	2.8°F (1.5°C)	10th Warmest	Warmest since: 2016	2015
Jul–Dec 2020 6-Month	56.3°F (13.5°C)	53.2°F (11.8°C)	3.1°F (1.7°C)	123rd Coolest	Coolest since: 2019	1976
Jul–Dec 2020 6-Month	56.3°F (13.5°C)	53.2°F (11.8°C)	3.1°F (1.7°C)	6th Warmest	Warmest since: 2016	1931, 2015
Jun–Dec 2020 7-Month	57.8°F (14.3°C)	55.0°F (12.8°C)	2.8°F (1.5°C)	123rd Coolest	Coolest since: 2019	1917
	57.8°F (14.3°C)	55.0°F (12.8°C)	2.8°F (1.5°C)	6th Warmest	Warmest since: 2016	2015
	Ties: 1900
May–Dec 2020 8-Month	57.6°F (14.2°C)	55.4°F (13.0°C)	2.2°F (1.2°C)	119th Coolest	Coolest since: 2019	1917
	57.6°F (14.2°C)	55.4°F (13.0°C)	2.2°F (1.2°C)	10th Warmest	Warmest since: 2018	2015
	Ties: 2007
Apr–Dec 2020 9-Month	56.2°F (13.4°C)	54.4°F (12.4°C)	1.8°F (1.0°C)	111th Coolest	Coolest since: 2017	1917
Apr–Dec 2020 9-Month	56.2°F (13.4°C)	54.4°F (12.4°C)	1.8°F (1.0°C)	18th Warmest	Warmest since: 2019	2015
Mar–Dec 2020 10-Month	54.8°F (12.7°C)	52.5°F (11.4°C)	2.3°F (1.3°C)	118th Coolest	Coolest since: 2019	1917
Mar–Dec 2020 10-Month	54.8°F (12.7°C)	52.5°F (11.4°C)	2.3°F (1.3°C)	11th Warmest	Warmest since: 2016	2021
Feb–Dec 2020 11-Month	52.9°F (11.6°C)	50.2°F (10.1°C)	2.7°F (1.5°C)	123rd Coolest	Coolest since: 2019	1917
	52.9°F (11.6°C)	50.2°F (10.1°C)	2.7°F (1.5°C)	6th Warmest	Warmest since: 2016	2012
	Ties: 1991
Jan–Dec 2020 12-Month	51.2°F (10.7°C)	48.2°F (9.0°C)	3.0°F (1.7°C)	126th Coolest	Coolest since: 2019	1917
	51.2°F (10.7°C)	48.2°F (9.0°C)	3.0°F (1.7°C)	3rd Warmest	Warmest since: 2012	1998, 2012
	Ties: 2021
Jul 2019–Dec 2020 18-Month	52.5°F (11.4°C)	49.9°F (9.9°C)	2.6°F (1.5°C)	123rd Coolest	Coolest since: 2019	1904
Jul 2019–Dec 2020 18-Month	52.5°F (11.4°C)	49.9°F (9.9°C)	2.6°F (1.5°C)	5th Warmest	Warmest since: 2017	2012
Jan 2019–Dec 2020 24-Month	50.5°F (10.3°C)	48.1°F (8.9°C)	2.4°F (1.4°C)	122nd Coolest	Coolest since: 2019	1905
Jan 2019–Dec 2020 24-Month	50.5°F (10.3°C)	48.1°F (8.9°C)	2.4°F (1.4°C)	6th Warmest	Warmest since: 2017	2021
Jan 2018–Dec 2020 36-Month	50.3°F (10.2°C)	48.2°F (9.0°C)	2.1°F (1.2°C)	121st Coolest	Coolest since: 2019	1905, 1926
	50.3°F (10.2°C)	48.2°F (9.0°C)	2.1°F (1.2°C)	6th Warmest	Warmest since: 2018	2012
	Ties: 2017
Jan 2017–Dec 2020 48-Month	50.3°F (10.2°C)	48.1°F (8.9°C)	2.2°F (1.3°C)	123rd Coolest	Coolest since: 2019	1907
	50.3°F (10.2°C)	48.1°F (8.9°C)	2.2°F (1.3°C)	3rd Warmest	Warmest since: 2019	2021, 2022
	Ties: 2013, 2019
Jan 2016–Dec 2020 60-Month	50.5°F (10.3°C)	48.1°F (8.9°C)	2.4°F (1.4°C)	124th Coolest	Coolest since: 2019	1905, 1907
	50.5°F (10.3°C)	48.1°F (8.9°C)	2.4°F (1.4°C)	1st Warmest	Warmest to Date	2020, 2021
	Ties: 2021

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings