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 1966

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1966
1-Month
31.0°F
(-0.6°C)
28.1°F
(-2.2°C)
2.9°F
(1.6°C)
106th Coolest
Coolest since:
1990
23rd Warmest
Warmest since:
1917
Ties: 1999, 2019
Nov–Dec 1966
2-Month
34.0°F
(1.1°C)
31.3°F
(-0.4°C)
2.7°F
(1.5°C)
112th Coolest
Coolest since:
1985
17th Warmest
Warmest since:
1917
Ties: 1941, 2004, 2021
Oct–Dec 1966
3-Month
37.8°F
(3.2°C)
36.2°F
(2.3°C)
1.6°F
(0.9°C)
106th Coolest
Coolest since:
1985
23rd Warmest
Warmest since:
1917
Ties: 1995
Sep–Dec 1966
4-Month
43.1°F
(6.2°C)
41.0°F
(5.0°C)
2.1°F
(1.2°C)
114th Coolest
Coolest since:
1985
15th Warmest
Warmest since:
1917
Aug–Dec 1966
5-Month
47.1°F
(8.4°C)
45.4°F
(7.4°C)
1.7°F
(1.0°C)
106th Coolest
Coolest since:
1985
23rd Warmest
Warmest since:
1917, 2014
Ties: 1979, 1981, 1987, 2017
Jul–Dec 1966
6-Month
49.8°F
(9.9°C)
48.6°F
(9.2°C)
1.2°F
(0.7°C)
100th Coolest
Coolest since:
1985
29th Warmest
Warmest since:
2014
Ties: 1963, 2006
Jun–Dec 1966
7-Month
50.6°F
(10.3°C)
49.7°F
(9.8°C)
0.9°F
(0.5°C)
92nd Coolest
Coolest since:
1916
37th Warmest
Warmest since:
2021
Ties: 1936, 1963
May–Dec 1966
8-Month
50.8°F
(10.4°C)
49.8°F
(9.9°C)
1.0°F
(0.5°C)
99th Coolest
Coolest since:
1916
30th Warmest
Warmest since:
2021
Ties: 1933, 1992
Apr–Dec 1966
9-Month
49.9°F
(9.9°C)
49.0°F
(9.4°C)
0.9°F
(0.5°C)
97th Coolest
Coolest since:
1916
32nd Warmest
Warmest since:
2021
Ties: 1925, 1949
Mar–Dec 1966
10-Month
48.5°F
(9.2°C)
47.7°F
(8.7°C)
0.8°F
(0.5°C)
95th Coolest
Coolest since:
1916
34th Warmest
Warmest since:
2015
Ties: 1947, 1981, 1997
Feb–Dec 1966
11-Month
46.8°F
(8.2°C)
46.1°F
(7.8°C)
0.7°F
(0.4°C)
90th Coolest
Coolest since:
1955
39th Warmest
Warmest since:
2015
Ties: 1937, 1961, 2000
Jan–Dec 1966
12-Month
45.3°F
(7.4°C)
44.4°F
(6.9°C)
0.9°F
(0.5°C)
91st Coolest
Coolest since:
1916
38th Warmest
Warmest since:
2015
Ties: 1900, 1999, 2000
Jul 1965–Dec 1966
18-Month
46.5°F
(8.1°C)
45.8°F
(7.7°C)
0.7°F
(0.4°C)
86th Coolest
Coolest since:
1985
42nd Warmest
Warmest since:
2015
Ties: 1959, 1991, 2001, 2009
Jan 1965–Dec 1966
24-Month
45.0°F
(7.2°C)
44.5°F
(6.9°C)
0.5°F
(0.3°C)
84th Coolest
Coolest since:
1917
44th Warmest
Warmest since:
2015
Ties: 1954, 1974, 1990
Jan 1964–Dec 1966
36-Month
44.3°F
(6.8°C)
44.4°F
(6.9°C)
-0.1°F
(-0.1°C)
50th Coolest
Coolest since:
1913
77th Warmest
Warmest since:
2016
Ties: 1907, 1908, 1946, 1965
Jan 1963–Dec 1966
48-Month
44.5°F
(6.9°C)
44.4°F
(6.9°C)
0.1°F
(0.0°C)
59th Coolest
Coolest since:
1913, 1914, 1919
67th Warmest
Warmest since:
2016, 2017
Ties: 1907, 1944, 1947, 1964, 1979, 1987
Jan 1962–Dec 1966
60-Month
44.5°F
(6.9°C)
44.4°F
(6.9°C)
0.1°F
(0.0°C)
57th Coolest
Coolest since:
1913
68th Warmest
Warmest since:
2018
Ties: 1945, 1965, 1977, 1984, 1987

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