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 1927

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1927
1-Month
22.2°F
(-5.4°C)
28.1°F
(-2.2°C)
-5.9°F
(-3.2°C)
10th Coolest
Coolest since:
1990
119th Warmest
Warmest since:
1917
Nov–Dec 1927
2-Month
30.0°F
(-1.1°C)
31.4°F
(-0.3°C)
-1.4°F
(-0.8°C)
34th Coolest
Coolest since:
1985
95th Warmest
Warmest since:
1917
Ties: 1928, 2009
Oct–Dec 1927
3-Month
35.5°F
(1.9°C)
36.2°F
(2.3°C)
-0.7°F
(-0.4°C)
38th Coolest
Coolest since:
1985
91st Warmest
Warmest since:
1917
Ties: 1895, 1908, 1920
Sep–Dec 1927
4-Month
40.0°F
(4.4°C)
41.1°F
(5.1°C)
-1.1°F
(-0.7°C)
27th Coolest
Coolest since:
1985
102nd Warmest
Warmest since:
1917
Ties: 1896
Aug–Dec 1927
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, 1928, 1946, 1955, 1959, 1961, 1982
Jul–Dec 1927
6-Month
47.8°F
(8.8°C)
48.6°F
(9.2°C)
-0.8°F
(-0.4°C)
29th Coolest
Coolest since:
1985
100th Warmest
Warmest since:
2014
Ties: 1931, 1935, 1970
Jun–Dec 1927
7-Month
49.2°F
(9.6°C)
49.8°F
(9.9°C)
-0.6°F
(-0.3°C)
35th Coolest
Coolest since:
1916
94th Warmest
Warmest since:
2021
Ties: 1931, 1956, 1968
May–Dec 1927
8-Month
48.9°F
(9.4°C)
49.8°F
(9.9°C)
-0.9°F
(-0.5°C)
21st Coolest
Coolest since:
1916
108th Warmest
Warmest since:
2021
Ties: 1903, 1951, 1983, 1993
Apr–Dec 1927
9-Month
48.0°F
(8.9°C)
49.0°F
(9.4°C)
-1.0°F
(-0.5°C)
20th Coolest
Coolest since:
1916
109th Warmest
Warmest since:
2021
Ties: 1975, 1983
Mar–Dec 1927
10-Month
46.7°F
(8.2°C)
47.7°F
(8.7°C)
-1.0°F
(-0.5°C)
23rd Coolest
Coolest since:
1916
106th Warmest
Warmest since:
2015
Ties: 1913, 1924, 1978
Feb–Dec 1927
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, 1956
Jan–Dec 1927
12-Month
43.7°F
(6.5°C)
44.4°F
(6.9°C)
-0.7°F
(-0.4°C)
28th Coolest
Coolest since:
1916
101st Warmest
Warmest since:
2015
Ties: 1935, 1950, 1971
Jul 1926–Dec 1927
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: 1930, 1933, 1957
Jan 1926–Dec 1927
24-Month
44.9°F
(7.2°C)
44.5°F
(6.9°C)
0.4°F
(0.3°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2015
Ties: 1942, 1953, 1962
Jan 1925–Dec 1927
36-Month
45.2°F
(7.3°C)
44.4°F
(6.9°C)
0.8°F
(0.4°C)
93rd Coolest
Coolest since:
1913
34th Warmest
Warmest since:
2016
Ties: 1926, 1934, 1967, 1968, 1993, 2012
Jan 1924–Dec 1927
48-Month
44.8°F
(7.1°C)
44.4°F
(6.9°C)
0.4°F
(0.2°C)
77th Coolest
Coolest since:
1913, 1914, 1919
49th Warmest
Warmest since:
2016, 2017
Ties: 1935, 1960, 1963, 1970
Jan 1923–Dec 1927
60-Month
44.7°F
(7.1°C)
44.4°F
(6.9°C)
0.3°F
(0.2°C)
72nd Coolest
Coolest since:
1913
53rd Warmest
Warmest to Date
2018
Ties: 1939, 1963, 1968, 1983

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