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 1956

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1956
1-Month 		29.5°F
(-1.4°C)		 28.1°F
(-2.2°C)		 1.4°F
(0.8°C)		 81st Coolest
Coolest since:
 1990
48th Warmest
Warmest since:
 1917
Ties: 1904
Nov–Dec 1956
2-Month 		30.8°F
(-0.7°C)		 31.4°F
(-0.3°C)		 -0.6°F
(-0.4°C)		 43rd Coolest
Coolest since:
 1985
86th Warmest
Warmest since:
 1917
Ties: 1902, 1936, 1940, 1968, 2013
Oct–Dec 1956
3-Month 		35.2°F
(1.8°C)		 36.2°F
(2.3°C)		 -1.0°F
(-0.5°C)		 33rd Coolest
Coolest since:
 1985
96th Warmest
Warmest since:
 1917
Ties: 1913
Sep–Dec 1956
4-Month 		40.5°F
(4.7°C)		 41.1°F
(5.1°C)		 -0.6°F
(-0.4°C)		 43rd Coolest
Coolest since:
 1985
86th Warmest
Warmest since:
 1917
Ties: 1902, 1908, 1990
Aug–Dec 1956
5-Month 		44.8°F
(7.1°C)		 45.5°F
(7.5°C)		 -0.7°F
(-0.4°C)		 36th Coolest
Coolest since:
 1985
93rd Warmest
Warmest since:
 1917, 2014
Ties: 1899, 1908, 1983, 2000
Jul–Dec 1956
6-Month 		48.2°F
(9.0°C)		 48.6°F
(9.2°C)		 -0.4°F
(-0.2°C)		 42nd Coolest
Coolest since:
 1985
87th Warmest
Warmest since:
 2014
Ties: 1896, 1954, 1992
Jun–Dec 1956
7-Month 		49.2°F
(9.6°C)		 49.7°F
(9.8°C)		 -0.5°F
(-0.2°C)		 35th Coolest
Coolest since:
 1916
94th Warmest
Warmest since:
 2021
Ties: 1927, 1931, 1968
May–Dec 1956
8-Month 		49.6°F
(9.8°C)		 49.8°F
(9.9°C)		 -0.2°F
(-0.1°C)		 44th Coolest
Coolest since:
 1916
85th Warmest
Warmest since:
 2021
Ties: 1907, 1945
Apr–Dec 1956
9-Month 		49.0°F
(9.4°C)		 49.0°F
(9.4°C)		 0.0°F
(0.0°C)		 50th Coolest
Coolest since:
 1916
79th Warmest
Warmest since:
 2021
Ties: 1901, 1915, 1923, 1965
Mar–Dec 1956
10-Month 		47.5°F
(8.6°C)		 47.7°F
(8.7°C)		 -0.2°F
(-0.1°C)		 48th Coolest
Coolest since:
 1916
81st Warmest
Warmest since:
 2015
Ties: 1914, 1923, 1929, 1943, 1946
Feb–Dec 1956
11-Month 		45.3°F
(7.4°C)		 46.1°F
(7.8°C)		 -0.8°F
(-0.4°C)		 26th Coolest
Coolest since:
 1955
103rd Warmest
Warmest since:
 2015
Ties: 1896, 1923, 1927
Jan–Dec 1956
12-Month 		43.9°F
(6.6°C)		 44.5°F
(6.9°C)		 -0.6°F
(-0.3°C)		 34th Coolest
Coolest since:
 1916
95th Warmest
Warmest since:
 2015
Ties: 1957
Jul 1955–Dec 1956
18-Month 		45.0°F
(7.2°C)		 45.8°F
(7.7°C)		 -0.8°F
(-0.5°C)		 20th Coolest
Coolest since:
 1985
108th Warmest
Warmest since:
 2015
Ties: 1898
Jan 1955–Dec 1956
24-Month 		43.0°F
(6.1°C)		 44.4°F
(6.9°C)		 -1.4°F
(-0.8°C)		 5th Coolest
Coolest since:
 1917
123rd Warmest
Warmest since:
 2015
Jan 1954–Dec 1956
36-Month 		43.4°F
(6.3°C)		 44.4°F
(6.9°C)		 -1.0°F
(-0.6°C)		 6th Coolest
Coolest since:
 1913
121st Warmest
Warmest since:
 2016
Ties: 1912, 1924
Jan 1953–Dec 1956
48-Month 		44.0°F
(6.7°C)		 44.4°F
(6.9°C)		 -0.4°F
(-0.2°C)		 28th Coolest
Coolest since:
 1913, 1914, 1919
98th Warmest
Warmest since:
 2016, 2017
Ties: 1901, 1902, 1903, 1909, 1910, 1921, 1925, 1949
Jan 1952–Dec 1956
60-Month 		44.0°F
(6.7°C)		 44.4°F
(6.9°C)		 -0.4°F
(-0.2°C)		 28th Coolest
Coolest since:
 1913
97th Warmest
Warmest since:
 2018
Ties: 1901, 1909, 1955, 1957

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