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 1928

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1928
1-Month
25.0°F
(-3.9°C)
28.1°F
(-2.2°C)
-3.1°F
(-1.7°C)
22nd Coolest
Coolest since:
1990
107th Warmest
Warmest since:
1917
Ties: 1931
Nov–Dec 1928
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: 1927, 2009
Oct–Dec 1928
3-Month
35.0°F
(1.7°C)
36.1°F
(2.3°C)
-1.1°F
(-0.6°C)
29th Coolest
Coolest since:
1985
100th Warmest
Warmest since:
1917
Ties: 1970
Sep–Dec 1928
4-Month
40.2°F
(4.6°C)
41.0°F
(5.0°C)
-0.8°F
(-0.4°C)
30th Coolest
Coolest since:
1985
99th Warmest
Warmest since:
1917
Ties: 1913, 1922
Aug–Dec 1928
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, 1927, 1946, 1955, 1959, 1961, 1982
Jul–Dec 1928
6-Month
48.0°F
(8.9°C)
48.6°F
(9.2°C)
-0.6°F
(-0.3°C)
36th Coolest
Coolest since:
1985
93rd Warmest
Warmest since:
2014
Ties: 1897, 1899, 1959
Jun–Dec 1928
7-Month
49.0°F
(9.4°C)
49.7°F
(9.8°C)
-0.7°F
(-0.4°C)
24th Coolest
Coolest since:
1916
105th Warmest
Warmest since:
2021
Ties: 1899, 1903, 1913, 1946, 1954, 1982
May–Dec 1928
8-Month
49.7°F
(9.8°C)
49.8°F
(9.9°C)
-0.1°F
(-0.1°C)
47th Coolest
Coolest since:
1916
82nd Warmest
Warmest since:
2021
Ties: 1900, 1931, 1944, 1965, 2000
Apr–Dec 1928
9-Month
48.7°F
(9.3°C)
49.0°F
(9.4°C)
-0.3°F
(-0.1°C)
44th Coolest
Coolest since:
1916
85th Warmest
Warmest since:
2021
Ties: 1907, 1929, 1946
Mar–Dec 1928
10-Month
47.6°F
(8.7°C)
47.7°F
(8.7°C)
-0.1°F
(0.0°C)
54th Coolest
Coolest since:
1916
75th Warmest
Warmest since:
2015
Ties: 1901, 2008, 2010
Feb–Dec 1928
11-Month
46.0°F
(7.8°C)
46.1°F
(7.8°C)
-0.1°F
(0.0°C)
50th Coolest
Coolest since:
1955
79th Warmest
Warmest since:
2015
Ties: 1942, 1943, 1952, 1965, 1983
Jan–Dec 1928
12-Month
44.4°F
(6.9°C)
44.4°F
(6.9°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1916
74th Warmest
Warmest since:
2015
Ties: 1921, 1946, 1959, 1962, 1970, 2008
Jul 1927–Dec 1928
18-Month
45.5°F
(7.5°C)
45.8°F
(7.7°C)
-0.3°F
(-0.2°C)
37th Coolest
Coolest since:
1985
91st Warmest
Warmest since:
2015
Ties: 1902, 1910, 1960, 1969, 1975
Jan 1927–Dec 1928
24-Month
44.1°F
(6.7°C)
44.5°F
(6.9°C)
-0.4°F
(-0.2°C)
38th Coolest
Coolest since:
1917
90th Warmest
Warmest since:
2015
Ties: 1900, 1919, 1931, 1932, 1943, 1944, 1964, 1971, 1983, 1984
Jan 1926–Dec 1928
36-Month
44.7°F
(7.1°C)
44.4°F
(6.9°C)
0.3°F
(0.2°C)
73rd Coolest
Coolest since:
1913
54th Warmest
Warmest since:
2016
Ties: 1947, 1954, 1961, 1962, 1982, 1983
Jan 1925–Dec 1928
48-Month
45.0°F
(7.2°C)
44.4°F
(6.9°C)
0.6°F
(0.3°C)
83rd Coolest
Coolest since:
1913, 1914, 1919
43rd Warmest
Warmest to Date
2016, 2017
Ties: 1969, 1996
Jan 1924–Dec 1928
60-Month
44.8°F
(7.1°C)
44.5°F
(6.9°C)
0.3°F
(0.2°C)
78th Coolest
Coolest since:
1913
47th Warmest
Warmest to Date
2018
Ties: 1934, 1935, 1936, 1967, 1988

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