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 1989

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1989
1-Month
30.6°F
(-0.8°C)
28.1°F
(-2.2°C)
2.5°F
(1.4°C)
96th Coolest
Coolest since:
1990
33rd Warmest
Warmest since:
1917
Ties: 2003
Nov–Dec 1989
2-Month
33.8°F
(1.0°C)
31.3°F
(-0.4°C)
2.5°F
(1.4°C)
107th Coolest
Coolest since:
1985
22nd Warmest
Warmest since:
1917
Oct–Dec 1989
3-Month
37.7°F
(3.2°C)
36.2°F
(2.3°C)
1.5°F
(0.9°C)
104th Coolest
Coolest since:
1985
25th Warmest
Warmest since:
1917
Ties: 1963, 1974, 2012
Sep–Dec 1989
4-Month
42.5°F
(5.8°C)
41.1°F
(5.1°C)
1.4°F
(0.7°C)
99th Coolest
Coolest since:
1985
30th Warmest
Warmest since:
1917
Ties: 1998
Aug–Dec 1989
5-Month
46.2°F
(7.9°C)
45.5°F
(7.5°C)
0.7°F
(0.4°C)
83rd Coolest
Coolest since:
1985
46th Warmest
Warmest since:
1917, 2014
Ties: 2010
Jul–Dec 1989
6-Month
49.3°F
(9.6°C)
48.6°F
(9.2°C)
0.7°F
(0.4°C)
84th Coolest
Coolest since:
1985
45th Warmest
Warmest since:
2014
Ties: 1938, 1943, 1980, 2016
Jun–Dec 1989
7-Month
50.7°F
(10.4°C)
49.8°F
(9.9°C)
0.9°F
(0.5°C)
94th Coolest
Coolest since:
1916
35th Warmest
Warmest since:
2021
Ties: 1938
May–Dec 1989
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, 2008, 2019
Apr–Dec 1989
9-Month
50.0°F
(10.0°C)
49.0°F
(9.4°C)
1.0°F
(0.6°C)
101st Coolest
Coolest since:
1916
28th Warmest
Warmest since:
2021
Ties: 1904, 2002, 2022
Mar–Dec 1989
10-Month
48.6°F
(9.2°C)
47.7°F
(8.7°C)
0.9°F
(0.5°C)
98th Coolest
Coolest since:
1916
31st Warmest
Warmest since:
2015
Ties: 1925, 1941
Feb–Dec 1989
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, 2008, 2019
Jan–Dec 1989
12-Month
44.6°F
(7.0°C)
44.4°F
(6.9°C)
0.2°F
(0.1°C)
67th Coolest
Coolest since:
1916
62nd Warmest
Warmest since:
2015
Ties: 1910, 1914, 1968, 1979
Jul 1988–Dec 1989
18-Month
46.4°F
(8.0°C)
45.8°F
(7.7°C)
0.6°F
(0.3°C)
81st Coolest
Coolest since:
1985
47th Warmest
Warmest since:
2015
Ties: 1954, 1974, 1994, 1996, 2010
Jan 1988–Dec 1989
24-Month
45.3°F
(7.4°C)
44.5°F
(6.9°C)
0.8°F
(0.5°C)
93rd Coolest
Coolest since:
1917
35th Warmest
Warmest since:
2015
Ties: 1996, 2000
Jan 1987–Dec 1989
36-Month
45.7°F
(7.6°C)
44.5°F
(6.9°C)
1.2°F
(0.7°C)
109th Coolest
Coolest since:
1913
18th Warmest
Warmest since:
2016
Ties: 1999, 2000, 2019
Jan 1986–Dec 1989
48-Month
45.7°F
(7.6°C)
44.4°F
(6.9°C)
1.3°F
(0.7°C)
110th Coolest
Coolest since:
1913, 1914, 1919
16th Warmest
Warmest since:
2016, 2017
Ties: 2001
Jan 1985–Dec 1989
60-Month
45.0°F
(7.2°C)
44.4°F
(6.9°C)
0.6°F
(0.3°C)
88th Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Ties: 1962, 2011, 2012

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