Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2022. For more information, please see Climatological Rankings.


Pennsylvania

Average Temperature Rankings, December 2009

View Period (Months):All1234567891011121824364860
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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
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
76th 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)
102nd Coolest Coolest since: 2008 1917
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
43rd 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
49th 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
41st 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
73rd 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
78th 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
75th 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
66th 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
52nd 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
38th 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
56th 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)
67th Coolest Coolest since: 1997 1904
60th 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
42nd 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
31st 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
14th Warmest Warmest since: 2008 2021
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
17th Warmest Warmest since: 2008 2020, 2021
Ties: 2005, 2007

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Average Temperature, published September 2022, retrieved on October 6, 2022 from https://www.ncdc.noaa.gov/cag/