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 1987

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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1987
1-Month 		27.7°F
(-2.4°C)		 28.1°F
(-2.2°C)		 -0.4°F
(-0.2°C)		 50th Coolest
Coolest since:
 1990
79th Warmest
Warmest since:
 1917
Ties: 1963
Nov–Dec 1987
2-Month 		32.4°F
(0.2°C)		 31.4°F
(-0.3°C)		 1.0°F
(0.5°C)		 83rd Coolest
Coolest since:
 1985
46th Warmest
Warmest since:
 1917
Ties: 1929
Oct–Dec 1987
3-Month 		38.0°F
(3.3°C)		 36.2°F
(2.3°C)		 1.8°F
(1.0°C)		 110th Coolest
Coolest since:
 1985
19th Warmest
Warmest since:
 1917
Ties: 2015, 2020, 2021
Sep–Dec 1987
4-Month 		43.2°F
(6.2°C)		 41.0°F
(5.0°C)		 2.2°F
(1.2°C)		 117th Coolest
Coolest since:
 1985
12th Warmest
Warmest since:
 1917
Ties: 1950, 2012
Aug–Dec 1987
5-Month 		47.1°F
(8.4°C)		 45.5°F
(7.5°C)		 1.6°F
(0.9°C)		 106th Coolest
Coolest since:
 1985
23rd Warmest
Warmest since:
 1917, 2014
Ties: 1966, 1979, 1981, 2017
Jul–Dec 1987
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, 2007, 2008, 2011
Jun–Dec 1987
7-Month 		51.1°F
(10.6°C)		 49.7°F
(9.8°C)		 1.4°F
(0.8°C)		 105th Coolest
Coolest since:
 1916
24th Warmest
Warmest since:
 2021
Ties: 1934, 1974, 1999
May–Dec 1987
8-Month 		51.4°F
(10.8°C)		 49.8°F
(9.9°C)		 1.6°F
(0.9°C)		 116th Coolest
Coolest since:
 1916
13th Warmest
Warmest since:
 2021
Ties: 2001, 2006, 2012
Apr–Dec 1987
9-Month 		51.0°F
(10.6°C)		 49.0°F
(9.4°C)		 2.0°F
(1.2°C)		 123rd Coolest
Coolest since:
 1916
6th Warmest
Warmest since:
 2021
Ties: 1939
Mar–Dec 1987
10-Month 		49.7°F
(9.8°C)		 47.6°F
(8.7°C)		 2.1°F
(1.1°C)		 123rd Coolest
Coolest since:
 1916
6th Warmest
Warmest since:
 2015
Ties: 1940
Feb–Dec 1987
11-Month 		48.3°F
(9.1°C)		 46.2°F
(7.9°C)		 2.1°F
(1.2°C)		 121st Coolest
Coolest since:
 1955
8th Warmest
Warmest since:
 2015
Jan–Dec 1987
12-Month 		46.4°F
(8.0°C)		 44.4°F
(6.9°C)		 2.0°F
(1.1°C)		 118th Coolest
Coolest since:
 1916
11th Warmest
Warmest since:
 2015
Ties: 2004, 2018
Jul 1986–Dec 1987
18-Month 		47.1°F
(8.4°C)		 45.9°F
(7.7°C)		 1.2°F
(0.7°C)		 108th Coolest
Coolest since:
 1985
20th Warmest
Warmest since:
 2015
Ties: 1939, 1941, 1967, 2005, 2006
Jan 1986–Dec 1987
24-Month 		46.2°F
(7.9°C)		 44.5°F
(6.9°C)		 1.7°F
(1.0°C)		 120th Coolest
Coolest since:
 1917
8th Warmest
Warmest since:
 2015
Ties: 1940, 1988, 1992
Jan 1985–Dec 1987
36-Month 		44.8°F
(7.1°C)		 44.4°F
(6.9°C)		 0.4°F
(0.2°C)		 75th Coolest
Coolest since:
 1913
52nd Warmest
Warmest since:
 2016
Ties: 2011
Jan 1984–Dec 1987
48-Month 		44.5°F
(6.9°C)		 44.5°F
(6.9°C)		 0.0°F
(0.0°C)		 59th Coolest
Coolest since:
 1913, 1914, 1919
67th Warmest
Warmest since:
 2016, 2017
Ties: 1907, 1944, 1947, 1964, 1966, 1979
Jan 1983–Dec 1987
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, 1966, 1977, 1984

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