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 1898

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
December 1898
1-Month 		23.3°F
(-4.8°C)		 28.1°F
(-2.2°C)		 -4.8°F
(-2.6°C)		 15th Coolest
Coolest since:
 1990
114th Warmest
Warmest since:
 1917
Nov–Dec 1898
2-Month 		27.4°F
(-2.6°C)		 31.4°F
(-0.3°C)		 -4.0°F
(-2.3°C)		 7th Coolest
Coolest since:
 1985
122nd Warmest
Warmest since:
 1917
Oct–Dec 1898
3-Month 		32.5°F
(0.3°C)		 36.1°F
(2.3°C)		 -3.6°F
(-2.0°C)		 4th Coolest
Coolest since:
 1985
125th Warmest
Warmest since:
 1917
Sep–Dec 1898
4-Month 		38.4°F
(3.6°C)		 41.1°F
(5.1°C)		 -2.7°F
(-1.5°C)		 5th Coolest
Coolest since:
 1985
124th Warmest
Warmest since:
 1917
Aug–Dec 1898
5-Month 		43.9°F
(6.6°C)		 45.5°F
(7.5°C)		 -1.6°F
(-0.9°C)		 11th Coolest
Coolest since:
 1985
118th Warmest
Warmest since:
 1917, 2014
Jul–Dec 1898
6-Month 		47.2°F
(8.4°C)		 48.6°F
(9.2°C)		 -1.4°F
(-0.8°C)		 12th Coolest
Coolest since:
 1985
117th Warmest
Warmest since:
 2014
Ties: 1909
Jun–Dec 1898
7-Month 		48.6°F
(9.2°C)		 49.8°F
(9.9°C)		 -1.2°F
(-0.7°C)		 14th Coolest
Coolest since:
 1916
115th Warmest
Warmest since:
 2021
Ties: 1914, 1951, 1971, 1983
May–Dec 1898
8-Month 		48.7°F
(9.3°C)		 49.8°F
(9.9°C)		 -1.1°F
(-0.6°C)		 17th Coolest
Coolest since:
 1916
112th Warmest
Warmest since:
 2021
Ties: 1908
Apr–Dec 1898
9-Month 		48.2°F
(9.0°C)		 49.0°F
(9.4°C)		 -0.8°F
(-0.4°C)		 27th Coolest
Coolest since:
 1916
102nd Warmest
Warmest since:
 2021
Ties: 1908, 1935, 1968, 1970
Mar–Dec 1898
10-Month 		46.6°F
(8.1°C)		 47.7°F
(8.7°C)		 -1.1°F
(-0.6°C)		 19th Coolest
Coolest since:
 1916
110th Warmest
Warmest since:
 2015
Ties: 1935, 1951, 1982
Feb–Dec 1898
11-Month 		45.4°F
(7.4°C)		 46.1°F
(7.8°C)		 -0.7°F
(-0.4°C)		 30th Coolest
Coolest since:
 1955
99th Warmest
Warmest since:
 2015
Ties: 1905, 1908
Jan–Dec 1898
12-Month 		43.5°F
(6.4°C)		 44.4°F
(6.9°C)		 -0.9°F
(-0.5°C)		 22nd Coolest
Coolest since:
 1916
107th Warmest
Warmest since:
 2015
Ties: 1902, 1917, 1920, 1930, 1951
Jul 1897–Dec 1898
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: 1956
Jan 1897–Dec 1898
24-Month 		43.8°F
(6.6°C)		 44.5°F
(6.9°C)		 -0.7°F
(-0.3°C)		 23rd Coolest
Coolest since:
 1917
105th Warmest
Warmest since:
 2015
Ties: 1952, 1965, 1972, 1976
Jan 1896–Dec 1898
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 to Date
 2016
Ties: 1904, 1949, 1952, 1986
Jan 1895–Dec 1898
48-Month 		43.6°F
(6.4°C)		 44.4°F
(6.9°C)		 -0.8°F
(-0.5°C)		 9th Coolest
Coolest since:
 1913, 1914, 1919
117th Warmest
Warmest to Date
 2016, 2017
Ties: 1899, 1911, 1917, 1923, 1924, 1930, 1932, 1957

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