Statewide Rankings

Parameter:

Year:

Month:

State:

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 2009

View Period (Months):

All

Download:

Record Coolest

Bottom 1/10

Bottom 1/3

Normal

Top 1/3

Top 1/10

Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
December 2009 1-Month	28.9°F (-1.7°C)	28.9°F (-1.7°C)	0.0°F (0.0°C)	52nd Coolest	Coolest since: 2005	1989
	28.9°F (-1.7°C)	28.9°F (-1.7°C)	0.0°F (0.0°C)	77th Warmest	Warmest since: 2008	2015
	Ties: 1900, 1921
Nov–Dec 2009 2-Month	36.8°F (2.7°C)	34.1°F (1.2°C)	2.7°F (1.5°C)	103rd Coolest	Coolest since: 2008	1917
	36.8°F (2.7°C)	34.1°F (1.2°C)	2.7°F (1.5°C)	26th Warmest	Warmest since: 2006	2015
	Ties: 1971, 2012
Oct–Dec 2009 3-Month	40.8°F (4.9°C)	39.7°F (4.3°C)	1.1°F (0.6°C)	85th Coolest	Coolest since: 2008	1917
	40.8°F (4.9°C)	39.7°F (4.3°C)	1.1°F (0.6°C)	44th Warmest	Warmest since: 2007	2015
	Ties: 2018
Sep–Dec 2009 4-Month	45.9°F (7.7°C)	45.1°F (7.3°C)	0.8°F (0.4°C)	79th Coolest	Coolest since: 2008	1917
	45.9°F (7.7°C)	45.1°F (7.3°C)	0.8°F (0.4°C)	50th Warmest	Warmest since: 2007	2015
	Ties: 1897
Aug–Dec 2009 5-Month	50.7°F (10.4°C)	49.7°F (9.8°C)	1.0°F (0.6°C)	87th Coolest	Coolest since: 2008	1917
	50.7°F (10.4°C)	49.7°F (9.8°C)	1.0°F (0.6°C)	42nd Warmest	Warmest since: 2007	2015
	Ties: 1906, 1912, 1936, 1939, 1949, 1985
Jul–Dec 2009 6-Month	53.4°F (11.9°C)	53.2°F (11.8°C)	0.2°F (0.1°C)	55th Coolest	Coolest since: 2008	1976
	53.4°F (11.9°C)	53.2°F (11.8°C)	0.2°F (0.1°C)	74th Warmest	Warmest since: 2007	1931, 2015
	Ties: 1932, 1993
Jun–Dec 2009 7-Month	55.1°F (12.8°C)	55.1°F (12.8°C)	0.0°F (0.0°C)	50th Coolest	Coolest since: 2000	1917
	55.1°F (12.8°C)	55.1°F (12.8°C)	0.0°F (0.0°C)	79th Warmest	Warmest since: 2008	2015
	Ties: 1955, 1978, 1986, 1993
May–Dec 2009 8-Month	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	53rd Coolest	Coolest since: 2008	1917
	55.5°F (13.1°C)	55.4°F (13.0°C)	0.1°F (0.1°C)	76th Warmest	Warmest since: 2007	2015
	Ties: 1895, 1919, 1942, 1985
Apr–Dec 2009 9-Month	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	62nd Coolest	Coolest since: 2000	1917
	54.8°F (12.7°C)	54.5°F (12.5°C)	0.3°F (0.2°C)	67th Warmest	Warmest since: 2008	2015
	Ties: 1944
Mar–Dec 2009 10-Month	53.1°F (11.7°C)	52.6°F (11.4°C)	0.5°F (0.3°C)	76th Coolest	Coolest since: 2008	1917
	53.1°F (11.7°C)	52.6°F (11.4°C)	0.5°F (0.3°C)	53rd Warmest	Warmest since: 2007	2021
	Ties: 1899, 1979, 2003
Feb–Dec 2009 11-Month	51.0°F (10.6°C)	50.2°F (10.1°C)	0.8°F (0.5°C)	90th Coolest	Coolest since: 2008	1917
	51.0°F (10.6°C)	50.2°F (10.1°C)	0.8°F (0.5°C)	39th Warmest	Warmest since: 2007	2012
	Ties: 1913, 1941, 1948, 1954, 1985
Jan–Dec 2009 12-Month	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 2003	1917
	48.4°F (9.1°C)	48.1°F (8.9°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 2008	1998, 2012
	Ties: 1927, 1942
Jul 2008–Dec 2009 18-Month	50.0°F (10.0°C)	49.8°F (9.9°C)	0.2°F (0.1°C)	64th Coolest	Coolest since: 1997	1904
	50.0°F (10.0°C)	49.8°F (9.9°C)	0.2°F (0.1°C)	64th Warmest	Warmest since: 2008	2012
	Ties: 1911, 1929, 1930, 1941, 1988, 1992
Jan 2008–Dec 2009 24-Month	48.6°F (9.2°C)	48.1°F (8.9°C)	0.5°F (0.3°C)	85th Coolest	Coolest since: 2004	1905
	48.6°F (9.2°C)	48.1°F (8.9°C)	0.5°F (0.3°C)	43rd Warmest	Warmest since: 2008	2021
	Ties: 1898, 1899, 1900, 1919, 1942, 1986, 1988
Jan 2007–Dec 2009 36-Month	48.9°F (9.4°C)	48.1°F (8.9°C)	0.8°F (0.5°C)	95th Coolest	Coolest since: 2005	1905, 1926
	48.9°F (9.4°C)	48.1°F (8.9°C)	0.8°F (0.5°C)	32nd Warmest	Warmest since: 2008	2012
	Ties: 1921, 1939, 1949, 1975, 1993
Jan 2006–Dec 2009 48-Month	49.4°F (9.7°C)	48.1°F (8.9°C)	1.3°F (0.8°C)	111th Coolest	Coolest since: 2006	1907
	49.4°F (9.7°C)	48.1°F (8.9°C)	1.3°F (0.8°C)	15th Warmest	Warmest since: 2008	2021, 2022
	Ties: 1933, 2011, 2015
Jan 2005–Dec 2009 60-Month	49.4°F (9.7°C)	48.1°F (8.9°C)	1.3°F (0.8°C)	107th Coolest	Coolest since: 2007	1905, 1907
	49.4°F (9.7°C)	48.1°F (8.9°C)	1.3°F (0.8°C)	18th Warmest	Warmest since: 2008	2020, 2021
	Ties: 2005, 2007

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings