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 1989

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1989 1-Month	17.4°F (-8.1°C)	28.9°F (-1.7°C)	-11.5°F (-6.4°C)	1st Coolest	Coolest since: 1989	1989
December 1989 1-Month	17.4°F (-8.1°C)	28.9°F (-1.7°C)	-11.5°F (-6.4°C)	128th Warmest	Warmest since: 1988	2015
Nov–Dec 1989 2-Month	28.0°F (-2.2°C)	34.2°F (1.2°C)	-6.2°F (-3.4°C)	2nd Coolest	Coolest since: 1976	1917
	28.0°F (-2.2°C)	34.2°F (1.2°C)	-6.2°F (-3.4°C)	127th Warmest	Warmest since: 1988	2015
	Ties: 1976
Oct–Dec 1989 3-Month	35.8°F (2.1°C)	39.6°F (4.2°C)	-3.8°F (-2.1°C)	3rd Coolest	Coolest since: 1976	1917
Oct–Dec 1989 3-Month	35.8°F (2.1°C)	39.6°F (4.2°C)	-3.8°F (-2.1°C)	126th Warmest	Warmest since: 1988	2015
Sep–Dec 1989 4-Month	42.3°F (5.7°C)	45.2°F (7.3°C)	-2.9°F (-1.6°C)	3rd Coolest	Coolest since: 1976	1917
	42.3°F (5.7°C)	45.2°F (7.3°C)	-2.9°F (-1.6°C)	126th Warmest	Warmest since: 1988	2015
	Ties: 1962
Aug–Dec 1989 5-Month	47.4°F (8.6°C)	49.8°F (9.9°C)	-2.4°F (-1.3°C)	5th Coolest	Coolest since: 1976	1917
	47.4°F (8.6°C)	49.8°F (9.9°C)	-2.4°F (-1.3°C)	124th Warmest	Warmest since: 1988	2015
	Ties: 1962
Jul–Dec 1989 6-Month	51.3°F (10.7°C)	53.3°F (11.8°C)	-2.0°F (-1.1°C)	7th Coolest	Coolest since: 1976	1976
Jul–Dec 1989 6-Month	51.3°F (10.7°C)	53.3°F (11.8°C)	-2.0°F (-1.1°C)	122nd Warmest	Warmest since: 1988	1931, 2015
Jun–Dec 1989 7-Month	53.5°F (11.9°C)	55.0°F (12.8°C)	-1.5°F (-0.9°C)	9th Coolest	Coolest since: 1976	1917
	53.5°F (11.9°C)	55.0°F (12.8°C)	-1.5°F (-0.9°C)	120th Warmest	Warmest since: 1988	2015
	Ties: 1926, 2000
May–Dec 1989 8-Month	53.8°F (12.1°C)	55.4°F (13.0°C)	-1.6°F (-0.9°C)	8th Coolest	Coolest since: 1976	1917
	53.8°F (12.1°C)	55.4°F (13.0°C)	-1.6°F (-0.9°C)	121st Warmest	Warmest since: 1988	2015
	Ties: 1910, 1926
Apr–Dec 1989 9-Month	52.8°F (11.6°C)	54.5°F (12.5°C)	-1.7°F (-0.9°C)	8th Coolest	Coolest since: 1976	1917
	52.8°F (11.6°C)	54.5°F (12.5°C)	-1.7°F (-0.9°C)	121st Warmest	Warmest since: 1988	2015
	Ties: 1950
Mar–Dec 1989 10-Month	51.2°F (10.7°C)	52.6°F (11.4°C)	-1.4°F (-0.7°C)	12th Coolest	Coolest since: 1976	1917
Mar–Dec 1989 10-Month	51.2°F (10.7°C)	52.6°F (11.4°C)	-1.4°F (-0.7°C)	117th Warmest	Warmest since: 1988	2021
Feb–Dec 1989 11-Month	49.0°F (9.4°C)	50.2°F (10.1°C)	-1.2°F (-0.7°C)	16th Coolest	Coolest since: 1978	1917
	49.0°F (9.4°C)	50.2°F (10.1°C)	-1.2°F (-0.7°C)	113th Warmest	Warmest since: 1988	2012
	Ties: 1895, 1962
Jan–Dec 1989 12-Month	47.5°F (8.6°C)	48.2°F (9.0°C)	-0.7°F (-0.4°C)	25th Coolest	Coolest since: 1981	1917
	47.5°F (8.6°C)	48.2°F (9.0°C)	-0.7°F (-0.4°C)	104th Warmest	Warmest since: 1988	1998, 2012
	Ties: 1916, 1935, 1943, 1969, 1979, 1981
Jul 1988–Dec 1989 18-Month	49.5°F (9.7°C)	49.8°F (9.9°C)	-0.3°F (-0.2°C)	32nd Coolest	Coolest since: 1982	1904
	49.5°F (9.7°C)	49.8°F (9.9°C)	-0.3°F (-0.2°C)	96th Warmest	Warmest since: 1988	2012
	Ties: 1903, 1936, 1951, 1962, 1979, 1993, 1996
Jan 1988–Dec 1989 24-Month	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	35th Coolest	Coolest since: 1982	1905
	47.8°F (8.8°C)	48.2°F (9.0°C)	-0.4°F (-0.2°C)	93rd Warmest	Warmest since: 1988	2021
	Ties: 1910, 1935, 1959, 1965, 1970, 1997
Jan 1987–Dec 1989 36-Month	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1983	1905, 1926
	48.2°F (9.0°C)	48.1°F (8.9°C)	0.1°F (0.1°C)	69th Warmest	Warmest since: 1988	2012
	Ties: 1911, 1930, 1940, 1943, 1995
Jan 1986–Dec 1989 48-Month	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	70th Coolest	Coolest since: 1985	1907
	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 1988	2021, 2022
	Ties: 1901, 1924, 1946, 1976
Jan 1985–Dec 1989 60-Month	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	73rd Coolest	Coolest since: 1986	1905, 1907
	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	52nd Warmest	Warmest since: 1988	2020, 2021
	Ties: 1936, 1939, 1946, 1947, 1975, 1986

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings