Statewide Rankings

Statewide Data Info
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Pennsylvania

Average Temperature Rankings, December 2009

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  • Record Coolest
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  • 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:
1989
77th Warmest
Warmest since:
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:
1917
26th Warmest
Warmest since:
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:
1917
44th Warmest
Warmest since:
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:
1917
50th Warmest
Warmest since:
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:
1917
42nd Warmest
Warmest since:
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:
1976
74th Warmest
Warmest since:
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:
1917
79th Warmest
Warmest since:
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:
1917
76th Warmest
Warmest since:
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:
1917
67th Warmest
Warmest since:
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:
1917
53rd Warmest
Warmest since:
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:
1917
39th Warmest
Warmest since:
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:
1917
57th Warmest
Warmest since:
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:
1904
64th Warmest
Warmest since:
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:
1905
43rd Warmest
Warmest since:
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:
1905, 1926
32nd Warmest
Warmest since:
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:
1907
15th Warmest
Warmest since:
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:
1905, 1907
18th Warmest
Warmest since:
2020, 2021
Ties: 2005, 2007

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