Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Pacific Northwest Basin

Average Temperature Rankings, December 2008

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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 2008
1-Month
25.6°F
(-3.6°C)
28.1°F
(-2.2°C)
-2.5°F
(-1.4°C)
25th Coolest
Coolest since:
1990
104th Warmest
Warmest since:
1917
Nov–Dec 2008
2-Month
32.5°F
(0.3°C)
31.3°F
(-0.4°C)
1.2°F
(0.7°C)
84th Coolest
Coolest since:
1985
45th Warmest
Warmest since:
1917
Oct–Dec 2008
3-Month
37.0°F
(2.8°C)
36.1°F
(2.3°C)
0.9°F
(0.5°C)
81st Coolest
Coolest since:
1985
48th Warmest
Warmest since:
1917
Ties: 1947, 2016
Sep–Dec 2008
4-Month
42.0°F
(5.6°C)
41.1°F
(5.1°C)
0.9°F
(0.5°C)
85th Coolest
Coolest since:
1985
44th Warmest
Warmest since:
1917
Ties: 1940, 1952, 2010
Aug–Dec 2008
5-Month
46.4°F
(8.0°C)
45.4°F
(7.4°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1985
39th Warmest
Warmest since:
1917, 2014
Ties: 1943, 2002, 2016
Jul–Dec 2008
6-Month
49.6°F
(9.8°C)
48.6°F
(9.2°C)
1.0°F
(0.6°C)
93rd Coolest
Coolest since:
1985
36th Warmest
Warmest since:
2014
Ties: 1962, 1974, 1987, 2007, 2011
Jun–Dec 2008
7-Month
50.5°F
(10.3°C)
49.8°F
(9.9°C)
0.7°F
(0.4°C)
89th Coolest
Coolest since:
1916
40th Warmest
Warmest since:
2021
Ties: 1906, 1918, 1962, 1977, 1981, 1997
May–Dec 2008
8-Month
50.5°F
(10.3°C)
49.8°F
(9.9°C)
0.7°F
(0.4°C)
90th Coolest
Coolest since:
1916
39th Warmest
Warmest since:
2021
Ties: 1925, 1973, 1989, 2019
Apr–Dec 2008
9-Month
49.2°F
(9.6°C)
49.0°F
(9.4°C)
0.2°F
(0.2°C)
58th Coolest
Coolest since:
1916
71st Warmest
Warmest since:
2021
Ties: 1918, 1943, 1960, 1961
Mar–Dec 2008
10-Month
47.6°F
(8.7°C)
47.6°F
(8.7°C)
0.0°F
(0.0°C)
54th Coolest
Coolest since:
1916
75th Warmest
Warmest since:
2015
Ties: 1901, 1928, 2010
Feb–Dec 2008
11-Month
46.2°F
(7.9°C)
46.1°F
(7.8°C)
0.1°F
(0.1°C)
58th Coolest
Coolest since:
1955
71st Warmest
Warmest since:
2015
Ties: 1907, 1918, 1930, 1931, 1936, 1968, 1969, 1989, 2019
Jan–Dec 2008
12-Month
44.4°F
(6.9°C)
44.4°F
(6.9°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1916
74th Warmest
Warmest since:
2015
Ties: 1921, 1928, 1946, 1959, 1962, 1970
Jul 2007–Dec 2008
18-Month
46.2°F
(7.9°C)
45.9°F
(7.7°C)
0.3°F
(0.2°C)
75th Coolest
Coolest since:
1985
53rd Warmest
Warmest since:
2015
Ties: 1900, 1977
Jan 2007–Dec 2008
24-Month
45.2°F
(7.3°C)
44.4°F
(6.9°C)
0.8°F
(0.4°C)
90th Coolest
Coolest since:
1917
38th Warmest
Warmest since:
2015
Ties: 1968, 1993, 2012
Jan 2006–Dec 2008
36-Month
45.5°F
(7.5°C)
44.5°F
(6.9°C)
1.0°F
(0.6°C)
105th Coolest
Coolest since:
1913
22nd Warmest
Warmest since:
2016
Ties: 1936, 1994, 1996, 1998, 2001
Jan 2005–Dec 2008
48-Month
45.5°F
(7.5°C)
44.4°F
(6.9°C)
1.1°F
(0.6°C)
102nd Coolest
Coolest since:
1913, 1914, 1919
24th Warmest
Warmest since:
2016, 2017
Ties: 1994, 1997, 1999
Jan 2004–Dec 2008
60-Month
45.7°F
(7.6°C)
44.4°F
(6.9°C)
1.3°F
(0.7°C)
112th Coolest
Coolest since:
1913
13th Warmest
Warmest since:
2018
Ties: 1990, 1992, 1998, 2003, 2014

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