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 1958

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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1958
1-Month
33.6°F
(0.9°C)
28.1°F
(-2.2°C)
5.5°F
(3.1°C)
124th Coolest
Coolest since:
1990
5th Warmest
Warmest since:
1917
Nov–Dec 1958
2-Month
34.1°F
(1.2°C)
31.3°F
(-0.4°C)
2.8°F
(1.6°C)
115th Coolest
Coolest since:
1985
14th Warmest
Warmest since:
1917
Ties: 1949, 1981
Oct–Dec 1958
3-Month
38.6°F
(3.7°C)
36.1°F
(2.3°C)
2.5°F
(1.4°C)
115th Coolest
Coolest since:
1985
14th Warmest
Warmest since:
1917
Ties: 1965
Sep–Dec 1958
4-Month
42.8°F
(6.0°C)
41.0°F
(5.0°C)
1.8°F
(1.0°C)
109th Coolest
Coolest since:
1985
20th Warmest
Warmest since:
1917
Ties: 1974, 1988, 2001
Aug–Dec 1958
5-Month
47.6°F
(8.7°C)
45.4°F
(7.4°C)
2.2°F
(1.3°C)
121st Coolest
Coolest since:
1985
8th Warmest
Warmest since:
1917, 2014
Ties: 2001, 2022
Jul–Dec 1958
6-Month
50.6°F
(10.3°C)
48.6°F
(9.2°C)
2.0°F
(1.1°C)
119th Coolest
Coolest since:
1985
10th Warmest
Warmest since:
2014
Ties: 1937, 2015, 2017
Jun–Dec 1958
7-Month
51.9°F
(11.1°C)
49.8°F
(9.9°C)
2.1°F
(1.2°C)
124th Coolest
Coolest since:
1916
5th Warmest
Warmest to Date
2021
Ties: 2022
May–Dec 1958
8-Month
52.5°F
(11.4°C)
49.8°F
(9.9°C)
2.7°F
(1.5°C)
126th Coolest
Coolest since:
1916
3rd Warmest
Warmest to Date
2021
Ties: 2014
Apr–Dec 1958
9-Month
51.2°F
(10.7°C)
49.0°F
(9.4°C)
2.2°F
(1.3°C)
124th Coolest
Coolest since:
1916
5th Warmest
Warmest since:
2021
Mar–Dec 1958
10-Month
49.5°F
(9.7°C)
47.7°F
(8.7°C)
1.8°F
(1.0°C)
116th Coolest
Coolest since:
1916
13th Warmest
Warmest since:
2015
Feb–Dec 1958
11-Month
48.4°F
(9.1°C)
46.1°F
(7.8°C)
2.3°F
(1.3°C)
124th Coolest
Coolest since:
1955
5th Warmest
Warmest since:
2015
Ties: 2014, 2016
Jan–Dec 1958
12-Month
46.8°F
(8.2°C)
44.4°F
(6.9°C)
2.4°F
(1.3°C)
121st Coolest
Coolest since:
1916
8th Warmest
Warmest since:
2015
Jul 1957–Dec 1958
18-Month
47.4°F
(8.6°C)
45.9°F
(7.7°C)
1.5°F
(0.9°C)
116th Coolest
Coolest since:
1985
12th Warmest
Warmest since:
2015
Ties: 1998, 2013
Jan 1957–Dec 1958
24-Month
45.4°F
(7.4°C)
44.5°F
(6.9°C)
0.9°F
(0.5°C)
96th Coolest
Coolest since:
1917
32nd Warmest
Warmest since:
2015
Ties: 1981, 1991
Jan 1956–Dec 1958
36-Month
44.9°F
(7.2°C)
44.5°F
(6.9°C)
0.4°F
(0.3°C)
78th Coolest
Coolest since:
1913
49th Warmest
Warmest since:
2016
Ties: 1969, 2010
Jan 1955–Dec 1958
48-Month
44.2°F
(6.8°C)
44.4°F
(6.9°C)
-0.2°F
(-0.1°C)
40th Coolest
Coolest since:
1913, 1914, 1919
86th Warmest
Warmest since:
2016, 2017
Ties: 1906, 1908, 1945, 1946, 1948, 1978
Jan 1954–Dec 1958
60-Month
44.2°F
(6.8°C)
44.4°F
(6.9°C)
-0.2°F
(-0.1°C)
39th Coolest
Coolest since:
1913
86th Warmest
Warmest since:
2018
Ties: 1904, 1907, 1946, 1948, 1959, 1972, 1975

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