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 1917

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1917
1-Month
35.5°F
(1.9°C)
28.1°F
(-2.2°C)
7.4°F
(4.1°C)
127th Coolest
Coolest since:
1990
1st Warmest
Warmest to Date
1917
Nov–Dec 1917
2-Month
37.1°F
(2.8°C)
31.3°F
(-0.4°C)
5.8°F
(3.2°C)
127th Coolest
Coolest since:
1985
1st Warmest
Warmest to Date
1917
Oct–Dec 1917
3-Month
40.2°F
(4.6°C)
36.1°F
(2.3°C)
4.1°F
(2.3°C)
127th Coolest
Coolest since:
1985
1st Warmest
Warmest to Date
1917
Sep–Dec 1917
4-Month
44.4°F
(6.9°C)
41.0°F
(5.0°C)
3.4°F
(1.9°C)
127th Coolest
Coolest since:
1985
1st Warmest
Warmest to Date
1917
Aug–Dec 1917
5-Month
48.3°F
(9.1°C)
45.5°F
(7.5°C)
2.8°F
(1.6°C)
127th Coolest
Coolest since:
1985
1st Warmest
Warmest to Date
1917, 2014
Ties: 2014
Jul–Dec 1917
6-Month
51.2°F
(10.7°C)
48.6°F
(9.2°C)
2.6°F
(1.5°C)
126th Coolest
Coolest since:
1985
2nd Warmest
Warmest to Date
2014
Ties: 2021
Jun–Dec 1917
7-Month
51.6°F
(10.9°C)
49.7°F
(9.8°C)
1.9°F
(1.1°C)
120th Coolest
Coolest since:
1916
8th Warmest
Warmest to Date
2021
Ties: 1967, 2012
May–Dec 1917
8-Month
51.0°F
(10.6°C)
49.7°F
(9.8°C)
1.3°F
(0.8°C)
104th Coolest
Coolest since:
1916
24th Warmest
Warmest to Date
2021
Ties: 2007, 2016
Apr–Dec 1917
9-Month
49.7°F
(9.8°C)
49.0°F
(9.4°C)
0.7°F
(0.4°C)
88th Coolest
Coolest since:
1916
40th Warmest
Warmest since:
2021
Ties: 1910, 1974
Mar–Dec 1917
10-Month
47.4°F
(8.6°C)
47.7°F
(8.7°C)
-0.3°F
(-0.1°C)
44th Coolest
Coolest since:
1916
84th Warmest
Warmest since:
2015
Ties: 1907, 1944, 1965
Feb–Dec 1917
11-Month
45.5°F
(7.5°C)
46.1°F
(7.8°C)
-0.6°F
(-0.3°C)
33rd Coolest
Coolest since:
1955
95th Warmest
Warmest since:
2015
Ties: 1978, 2011
Jan–Dec 1917
12-Month
43.5°F
(6.4°C)
44.5°F
(6.9°C)
-1.0°F
(-0.5°C)
22nd Coolest
Coolest since:
1916
106th Warmest
Warmest since:
2015
Ties: 1898, 1902, 1920, 1930, 1951
Jul 1916–Dec 1917
18-Month
44.2°F
(6.8°C)
45.9°F
(7.7°C)
-1.7°F
(-0.9°C)
4th Coolest
Coolest since:
1985
123rd Warmest
Warmest since:
2015
Ties: 1912, 1955
Jan 1916–Dec 1917
24-Month
42.5°F
(5.8°C)
44.4°F
(6.9°C)
-1.9°F
(-1.1°C)
1st Coolest
Coolest since:
1917
126th Warmest
Warmest since:
2015
Jan 1915–Dec 1917
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
124th Warmest
Warmest since:
2016
Ties: 1918, 1950, 1957
Jan 1914–Dec 1917
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
116th Warmest
Warmest since:
2016, 2017
Ties: 1898, 1899, 1911, 1923, 1924, 1930, 1932, 1957
Jan 1913–Dec 1917
60-Month
43.5°F
(6.4°C)
44.4°F
(6.9°C)
-0.9°F
(-0.5°C)
4th Coolest
Coolest since:
1913
120th Warmest
Warmest since:
2018
Ties: 1899, 1912, 1914, 1923, 1952

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