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 1959

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1959
1-Month 		28.6°F
(-1.9°C)		 28.1°F
(-2.2°C)		 0.5°F
(0.3°C)		 69th Coolest
Coolest since:
 1990
60th Warmest
Warmest since:
 1917
Ties: 1965
Nov–Dec 1959
2-Month 		30.9°F
(-0.6°C)		 31.3°F
(-0.4°C)		 -0.4°F
(-0.2°C)		 49th Coolest
Coolest since:
 1985
80th Warmest
Warmest since:
 1917
Ties: 2005
Oct–Dec 1959
3-Month 		35.9°F
(2.2°C)		 36.2°F
(2.3°C)		 -0.3°F
(-0.1°C)		 45th Coolest
Coolest since:
 1985
84th Warmest
Warmest since:
 1917
Ties: 1938, 1993
Sep–Dec 1959
4-Month 		40.3°F
(4.6°C)		 41.1°F
(5.1°C)		 -0.8°F
(-0.5°C)		 33rd Coolest
Coolest since:
 1985
96th Warmest
Warmest since:
 1917
Ties: 1921, 1964, 1992
Aug–Dec 1959
5-Month 		44.5°F
(6.9°C)		 45.5°F
(7.5°C)		 -1.0°F
(-0.6°C)		 23rd Coolest
Coolest since:
 1985
106th Warmest
Warmest since:
 1917, 2014
Ties: 1896, 1927, 1928, 1946, 1955, 1961, 1982
Jul–Dec 1959
6-Month 		48.0°F
(8.9°C)		 48.6°F
(9.2°C)		 -0.6°F
(-0.3°C)		 36th Coolest
Coolest since:
 1985
93rd Warmest
Warmest since:
 2014
Ties: 1897, 1899, 1928
Jun–Dec 1959
7-Month 		49.4°F
(9.7°C)		 49.7°F
(9.8°C)		 -0.3°F
(-0.1°C)		 41st Coolest
Coolest since:
 1916
88th Warmest
Warmest since:
 2021
Ties: 1921
May–Dec 1959
8-Month 		49.1°F
(9.5°C)		 49.8°F
(9.9°C)		 -0.7°F
(-0.4°C)		 30th Coolest
Coolest since:
 1916
99th Warmest
Warmest since:
 2021
Ties: 1913, 1935, 1972
Apr–Dec 1959
9-Month 		48.5°F
(9.2°C)		 49.0°F
(9.4°C)		 -0.5°F
(-0.2°C)		 34th Coolest
Coolest since:
 1916
95th Warmest
Warmest since:
 2021
Ties: 1914, 1921, 1930, 1932, 1954, 2011
Mar–Dec 1959
10-Month 		47.2°F
(8.4°C)		 47.6°F
(8.7°C)		 -0.4°F
(-0.3°C)		 35th Coolest
Coolest since:
 1916
94th Warmest
Warmest since:
 2015
Ties: 1897, 1972, 1976, 2011
Feb–Dec 1959
11-Month 		45.7°F
(7.6°C)		 46.1°F
(7.8°C)		 -0.4°F
(-0.2°C)		 38th Coolest
Coolest since:
 1955
91st Warmest
Warmest since:
 2015
Ties: 1924, 1972
Jan–Dec 1959
12-Month 		44.4°F
(6.9°C)		 44.5°F
(6.9°C)		 -0.1°F
(0.0°C)		 55th Coolest
Coolest since:
 1916
74th Warmest
Warmest since:
 2015
Ties: 1921, 1928, 1946, 1962, 1970, 2008
Jul 1958–Dec 1959
18-Month 		46.5°F
(8.1°C)		 45.9°F
(7.7°C)		 0.6°F
(0.4°C)		 86th Coolest
Coolest since:
 1985
42nd Warmest
Warmest since:
 2015
Ties: 1966, 1991, 2001, 2009
Jan 1958–Dec 1959
24-Month 		45.6°F
(7.6°C)		 44.5°F
(6.9°C)		 1.1°F
(0.7°C)		 102nd Coolest
Coolest since:
 1917
26th Warmest
Warmest since:
 2015
Ties: 1939, 2019
Jan 1957–Dec 1959
36-Month 		45.0°F
(7.2°C)		 44.4°F
(6.9°C)		 0.6°F
(0.3°C)		 81st Coolest
Coolest since:
 1913
46th Warmest
Warmest since:
 2016
Ties: 1939, 1963
Jan 1956–Dec 1959
48-Month 		44.7°F
(7.1°C)		 44.4°F
(6.9°C)		 0.3°F
(0.2°C)		 72nd Coolest
Coolest since:
 1913, 1914, 1919
54th Warmest
Warmest since:
 2016, 2017
Ties: 1967, 1982, 1983, 2011
Jan 1955–Dec 1959
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, 1958, 1972, 1975

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