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 1909

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 1909 1-Month	24.4°F (-4.2°C)	28.9°F (-1.7°C)	-4.5°F (-2.5°C)	15th Coolest	Coolest since: 1904	1989
	24.4°F (-4.2°C)	28.9°F (-1.7°C)	-4.5°F (-2.5°C)	114th Warmest	Warmest since: 1908	2015
	Ties: 1926
Nov–Dec 1909 2-Month	34.0°F (1.1°C)	34.1°F (1.2°C)	-0.1°F (-0.1°C)	50th Coolest	Coolest since: 1908	1917
	34.0°F (1.1°C)	34.1°F (1.2°C)	-0.1°F (-0.1°C)	79th Warmest	Warmest since: 1902	2015
	Ties: 1929, 1939
Oct–Dec 1909 3-Month	38.0°F (3.3°C)	39.6°F (4.2°C)	-1.6°F (-0.9°C)	23rd Coolest	Coolest since: 1907	1917
Oct–Dec 1909 3-Month	38.0°F (3.3°C)	39.6°F (4.2°C)	-1.6°F (-0.9°C)	106th Warmest	Warmest since: 1908	2015
Sep–Dec 1909 4-Month	43.6°F (6.4°C)	45.1°F (7.3°C)	-1.5°F (-0.9°C)	18th Coolest	Coolest since: 1904	1917
	43.6°F (6.4°C)	45.1°F (7.3°C)	-1.5°F (-0.9°C)	111th Warmest	Warmest since: 1908	2015
	Ties: 1967, 1981
Aug–Dec 1909 5-Month	48.4°F (9.1°C)	49.8°F (9.9°C)	-1.4°F (-0.8°C)	15th Coolest	Coolest since: 1907	1917
	48.4°F (9.1°C)	49.8°F (9.9°C)	-1.4°F (-0.8°C)	114th Warmest	Warmest since: 1908	2015
	Ties: 1981
Jul–Dec 1909 6-Month	51.6°F (10.9°C)	53.2°F (11.8°C)	-1.6°F (-0.9°C)	10th Coolest	Coolest since: 1904	1976
	51.6°F (10.9°C)	53.2°F (11.8°C)	-1.6°F (-0.9°C)	119th Warmest	Warmest since: 1908	1931, 2015
	Ties: 1967
Jun–Dec 1909 7-Month	53.8°F (12.1°C)	55.0°F (12.8°C)	-1.2°F (-0.7°C)	15th Coolest	Coolest since: 1907	1917
Jun–Dec 1909 7-Month	53.8°F (12.1°C)	55.0°F (12.8°C)	-1.2°F (-0.7°C)	114th Warmest	Warmest since: 1908	2015
May–Dec 1909 8-Month	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	17th Coolest	Coolest since: 1907	1917
	54.3°F (12.4°C)	55.4°F (13.0°C)	-1.1°F (-0.6°C)	112th Warmest	Warmest since: 1908	2015
	Ties: 1963, 2000
Apr–Dec 1909 9-Month	53.4°F (11.9°C)	54.4°F (12.4°C)	-1.0°F (-0.5°C)	15th Coolest	Coolest since: 1907	1917
	53.4°F (11.9°C)	54.4°F (12.4°C)	-1.0°F (-0.5°C)	114th Warmest	Warmest since: 1908	2015
	Ties: 1910, 1925, 1935, 1940
Mar–Dec 1909 10-Month	51.4°F (10.8°C)	52.6°F (11.4°C)	-1.2°F (-0.6°C)	14th Coolest	Coolest since: 1907	1917
	51.4°F (10.8°C)	52.6°F (11.4°C)	-1.2°F (-0.6°C)	115th Warmest	Warmest since: 1908	2021
	Ties: 1962
Feb–Dec 1909 11-Month	49.7°F (9.8°C)	50.2°F (10.1°C)	-0.5°F (-0.3°C)	28th Coolest	Coolest since: 1907	1917
	49.7°F (9.8°C)	50.2°F (10.1°C)	-0.5°F (-0.3°C)	101st Warmest	Warmest since: 1908	2012
	Ties: 1903, 1910, 1935, 1947, 1969, 1979
Jan–Dec 1909 12-Month	47.9°F (8.8°C)	48.1°F (8.9°C)	-0.2°F (-0.1°C)	43rd Coolest	Coolest since: 1907	1917
	47.9°F (8.8°C)	48.1°F (8.9°C)	-0.2°F (-0.1°C)	86th Warmest	Warmest since: 1908	1998, 2012
	Ties: 1897, 1899, 1928, 1929, 1956, 1977, 1982
Jul 1908–Dec 1909 18-Month	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	52nd Coolest	Coolest since: 1908	1904
	49.8°F (9.9°C)	49.8°F (9.9°C)	0.0°F (0.0°C)	76th Warmest	Warmest since: 1906	2012
	Ties: 1923, 1928, 1950, 1956, 1960, 1972, 1994
Jan 1908–Dec 1909 24-Month	48.2°F (9.0°C)	48.2°F (9.0°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1908	1905
	48.2°F (9.0°C)	48.2°F (9.0°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1901	2021
	Ties: 1901, 1948, 1960, 1995, 2014
Jan 1907–Dec 1909 36-Month	47.5°F (8.6°C)	48.1°F (8.9°C)	-0.6°F (-0.3°C)	23rd Coolest	Coolest since: 1907	1905, 1926
	47.5°F (8.6°C)	48.1°F (8.9°C)	-0.6°F (-0.3°C)	104th Warmest	Warmest since: 1908	2012
	Ties: 1897, 1903, 1928
Jan 1906–Dec 1909 48-Month	47.8°F (8.8°C)	48.1°F (8.9°C)	-0.3°F (-0.1°C)	32nd Coolest	Coolest since: 1908	1907
	47.8°F (8.8°C)	48.1°F (8.9°C)	-0.3°F (-0.1°C)	94th Warmest	Warmest since: 1903	2021, 2022
	Ties: 1915, 1962
Jan 1905–Dec 1909 60-Month	47.6°F (8.7°C)	48.1°F (8.9°C)	-0.5°F (-0.2°C)	25th Coolest	Coolest since: 1908	1905, 1907
	47.6°F (8.7°C)	48.1°F (8.9°C)	-0.5°F (-0.2°C)	100th Warmest	Warmest since: 1903	2020, 2021
	Ties: 1929, 1963, 1978

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