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 1957

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1957
1-Month 		32.0°F
(0.0°C)		 28.1°F
(-2.2°C)		 3.9°F
(2.2°C)		 112th Coolest
Coolest since:
 1990
17th Warmest
Warmest since:
 1917
Nov–Dec 1957
2-Month 		32.2°F
(0.1°C)		 31.3°F
(-0.4°C)		 0.9°F
(0.5°C)		 80th Coolest
Coolest since:
 1985
49th Warmest
Warmest since:
 1917
Ties: 1975, 1977
Oct–Dec 1957
3-Month 		36.2°F
(2.3°C)		 36.2°F
(2.3°C)		 0.0°F
(0.0°C)		 55th Coolest
Coolest since:
 1985
74th Warmest
Warmest since:
 1917
Ties: 1967, 1969
Sep–Dec 1957
4-Month 		41.7°F
(5.4°C)		 41.0°F
(5.0°C)		 0.7°F
(0.4°C)		 72nd Coolest
Coolest since:
 1985
57th Warmest
Warmest since:
 1917
Ties: 1899
Aug–Dec 1957
5-Month 		45.6°F
(7.6°C)		 45.5°F
(7.5°C)		 0.1°F
(0.1°C)		 61st Coolest
Coolest since:
 1985
68th Warmest
Warmest since:
 1917, 2014
Ties: 1994
Jul–Dec 1957
6-Month 		48.5°F
(9.2°C)		 48.6°F
(9.2°C)		 -0.1°F
(0.0°C)		 51st Coolest
Coolest since:
 1985
78th Warmest
Warmest since:
 2014
Jun–Dec 1957
7-Month 		49.8°F
(9.9°C)		 49.8°F
(9.9°C)		 0.0°F
(0.0°C)		 54th Coolest
Coolest since:
 1916
75th Warmest
Warmest since:
 2021
May–Dec 1957
8-Month 		50.1°F
(10.1°C)		 49.8°F
(9.9°C)		 0.3°F
(0.2°C)		 69th Coolest
Coolest since:
 1916
60th Warmest
Warmest since:
 2021
Ties: 1901, 1918, 1961
Apr–Dec 1957
9-Month 		49.3°F
(9.6°C)		 49.0°F
(9.4°C)		 0.3°F
(0.2°C)		 64th Coolest
Coolest since:
 1916
65th Warmest
Warmest since:
 2021
Ties: 1897, 1953, 2000
Mar–Dec 1957
10-Month 		48.0°F
(8.9°C)		 47.7°F
(8.7°C)		 0.3°F
(0.2°C)		 75th Coolest
Coolest since:
 1916
54th Warmest
Warmest since:
 2015
Ties: 1906, 1915, 1918, 1953, 1962, 1969, 1977, 1980, 1991
Feb–Dec 1957
11-Month 		46.3°F
(7.9°C)		 46.1°F
(7.8°C)		 0.2°F
(0.1°C)		 70th Coolest
Coolest since:
 1955
59th Warmest
Warmest since:
 2015
Ties: 1996, 2009
Jan–Dec 1957
12-Month 		43.9°F
(6.6°C)		 44.4°F
(6.9°C)		 -0.5°F
(-0.3°C)		 34th Coolest
Coolest since:
 1916
95th Warmest
Warmest since:
 2015
Ties: 1956
Jul 1956–Dec 1957
18-Month 		45.3°F
(7.4°C)		 45.8°F
(7.7°C)		 -0.5°F
(-0.3°C)		 28th Coolest
Coolest since:
 1985
100th Warmest
Warmest since:
 2015
Ties: 1927, 1930, 1933
Jan 1956–Dec 1957
24-Month 		43.9°F
(6.6°C)		 44.5°F
(6.9°C)		 -0.6°F
(-0.3°C)		 28th Coolest
Coolest since:
 1917
100th Warmest
Warmest since:
 2015
Ties: 1902, 1910, 1921, 1924
Jan 1955–Dec 1957
36-Month 		43.3°F
(6.3°C)		 44.4°F
(6.9°C)		 -1.1°F
(-0.6°C)		 2nd Coolest
Coolest since:
 1913
125th Warmest
Warmest since:
 2016
Ties: 1917, 1918, 1950
Jan 1954–Dec 1957
48-Month 		43.6°F
(6.4°C)		 44.5°F
(6.9°C)		 -0.9°F
(-0.5°C)		 9th Coolest
Coolest since:
 1913, 1914, 1919
117th Warmest
Warmest since:
 2016, 2017
Ties: 1898, 1899, 1911, 1917, 1923, 1924, 1930, 1932
Jan 1953–Dec 1957
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, 1956

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