Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1986

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
December 1986
1-Month		28.5°F
(-1.9°C)		28.1°F
(-2.2°C)		0.4°F
(0.3°C)		67th Coolest
Coolest since:
1990
62nd Warmest
Warmest since:
1917
Ties: 1996
Nov–Dec 1986
2-Month		32.0°F
(0.0°C)		31.4°F
(-0.3°C)		0.6°F
(0.3°C)		75th Coolest
Coolest since:
1985
54th Warmest
Warmest since:
1917
Ties: 1942, 1963, 1979
Oct–Dec 1986
3-Month		37.1°F
(2.8°C)		36.2°F
(2.3°C)		0.9°F
(0.5°C)		88th Coolest
Coolest since:
1985
41st Warmest
Warmest since:
1917
Ties: 1942, 1943, 1954, 1973, 2010, 2018
Sep–Dec 1986
4-Month		40.7°F
(4.8°C)		41.1°F
(5.1°C)		-0.4°F
(-0.3°C)		49th Coolest
Coolest since:
1985
80th Warmest
Warmest since:
1917
Ties: 1926, 1945, 1996
Aug–Dec 1986
5-Month		46.0°F
(7.8°C)		45.5°F
(7.5°C)		0.5°F
(0.3°C)		79th Coolest
Coolest since:
1985
50th Warmest
Warmest since:
1917, 2014
Ties: 1938, 1973, 2006, 2013
Jul–Dec 1986
6-Month		48.4°F
(9.1°C)		48.6°F
(9.2°C)		-0.2°F
(-0.1°C)		48th Coolest
Coolest since:
1985
81st Warmest
Warmest since:
2014
Ties: 1915, 1920
Jun–Dec 1986
7-Month		50.3°F
(10.2°C)		49.8°F
(9.9°C)		0.5°F
(0.3°C)		80th Coolest
Coolest since:
1916
49th Warmest
Warmest since:
2021
Ties: 1926, 1960, 1973, 1994, 2019
May–Dec 1986
8-Month		50.4°F
(10.2°C)		49.8°F
(9.9°C)		0.6°F
(0.3°C)		84th Coolest
Coolest since:
1916
45th Warmest
Warmest since:
2021
Ties: 1949, 1950, 1969, 1995
Apr–Dec 1986
9-Month		49.4°F
(9.7°C)		49.0°F
(9.4°C)		0.4°F
(0.3°C)		72nd Coolest
Coolest since:
1916
57th Warmest
Warmest since:
2021
Ties: 1942, 1950, 1991, 2005, 2009
Mar–Dec 1986
10-Month		48.7°F
(9.3°C)		47.7°F
(8.7°C)		1.0°F
(0.6°C)		99th Coolest
Coolest since:
1916
30th Warmest
Warmest since:
2015
Feb–Dec 1986
11-Month		47.3°F
(8.5°C)		46.1°F
(7.8°C)		1.2°F
(0.7°C)		106th Coolest
Coolest since:
1955
23rd Warmest
Warmest since:
2015
Ties: 1941, 1994, 2001
Jan–Dec 1986
12-Month		45.9°F
(7.7°C)		44.5°F
(6.9°C)		1.4°F
(0.8°C)		108th Coolest
Coolest since:
1916
21st Warmest
Warmest since:
2015
Ties: 1981, 1988, 2017
Jul 1985–Dec 1986
18-Month		45.6°F
(7.6°C)		45.8°F
(7.7°C)		-0.2°F
(-0.1°C)		43rd Coolest
Coolest since:
1985
85th Warmest
Warmest since:
2015
Ties: 1908, 1914, 1924, 1937, 1962
Jan 1985–Dec 1986
24-Month		44.0°F
(6.7°C)		44.4°F
(6.9°C)		-0.4°F
(-0.2°C)		33rd Coolest
Coolest since:
1917
95th Warmest
Warmest since:
2015
Ties: 1897, 1904, 1908, 1948
Jan 1984–Dec 1986
36-Month		43.8°F
(6.6°C)		44.4°F
(6.9°C)		-0.6°F
(-0.3°C)		24th Coolest
Coolest since:
1913
103rd Warmest
Warmest since:
2016
Ties: 1898, 1904, 1949, 1952
Jan 1983–Dec 1986
48-Month		44.1°F
(6.7°C)		44.4°F
(6.9°C)		-0.3°F
(-0.2°C)		37th Coolest
Coolest since:
1913, 1914, 1919
89th Warmest
Warmest since:
2016, 2017
Ties: 1955, 1972
Jan 1982–Dec 1986
60-Month		43.9°F
(6.6°C)		44.4°F
(6.9°C)		-0.5°F
(-0.3°C)		20th Coolest
Coolest since:
1913
105th Warmest
Warmest since:
2018
Ties: 1900, 1902, 1905, 1918, 1921, 1950, 1985

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