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.

California River Basin

Average Temperature Rankings, May 1957

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1957
1-Month
58.9°F
(14.9°C)
60.7°F
(15.9°C)
-1.8°F
(-1.0°C)
32nd Coolest
Coolest since:
1977
97th Warmest
Warmest since:
2001
Ties: 1896
Apr–May 1957
2-Month
56.4°F
(13.6°C)
57.3°F
(14.1°C)
-0.9°F
(-0.5°C)
41st Coolest
Coolest since:
1967
88th Warmest
Warmest since:
1992
Ties: 1927, 1930, 1980
Mar–May 1957
3-Month
54.2°F
(12.3°C)
54.5°F
(12.5°C)
-0.3°F
(-0.2°C)
56th Coolest
Coolest since:
1917
73rd Warmest
Warmest since:
1934
Feb–May 1957
4-Month
52.7°F
(11.5°C)
52.2°F
(11.2°C)
0.5°F
(0.3°C)
73rd Coolest
Coolest since:
1917
56th Warmest
Warmest since:
1934
Ties: 1960
Jan–May 1957
5-Month
49.9°F
(9.9°C)
50.3°F
(10.2°C)
-0.4°F
(-0.3°C)
50th Coolest
Coolest since:
1917
79th Warmest
Warmest since:
2015
Ties: 1895, 1950
Dec 1956–May 1957
6-Month
48.9°F
(9.4°C)
49.1°F
(9.5°C)
-0.2°F
(-0.1°C)
51st Coolest
Coolest since:
1917
77th Warmest
Warmest since:
2015
Ties: 1907, 1916, 1956, 1983, 1985
Nov 1956–May 1957
7-Month
49.0°F
(9.4°C)
49.1°F
(9.5°C)
-0.1°F
(-0.1°C)
54th Coolest
Coolest since:
1917
74th Warmest
Warmest since:
2015
Ties: 1910, 2011
Oct 1956–May 1957
8-Month
50.0°F
(10.0°C)
50.4°F
(10.2°C)
-0.4°F
(-0.2°C)
40th Coolest
Coolest since:
1917
88th Warmest
Warmest since:
2015
Ties: 1972, 1995, 2010
Sep 1956–May 1957
9-Month
52.3°F
(11.3°C)
52.4°F
(11.3°C)
-0.1°F
(0.0°C)
51st Coolest
Coolest since:
1917
77th Warmest
Warmest since:
2015
Ties: 1927, 1935, 1991
Aug 1956–May 1957
10-Month
54.2°F
(12.3°C)
54.6°F
(12.6°C)
-0.4°F
(-0.3°C)
41st Coolest
Coolest since:
1917
87th Warmest
Warmest since:
2015
Ties: 1925, 1974, 1977
Jul 1956–May 1957
11-Month
56.0°F
(13.3°C)
56.4°F
(13.6°C)
-0.4°F
(-0.3°C)
39th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
2015
Ties: 1897, 1902, 1916, 1923
Jun 1956–May 1957
12-Month
57.1°F
(13.9°C)
57.4°F
(14.1°C)
-0.3°F
(-0.2°C)
40th Coolest
Coolest since:
1917
88th Warmest
Warmest since:
2015
Ties: 1907, 1923, 1924, 1925, 1956, 1966, 1967, 1998, 1999
Dec 1955–May 1957
18-Month
54.3°F
(12.4°C)
54.6°F
(12.6°C)
-0.3°F
(-0.2°C)
38th Coolest
Coolest since:
1917
89th Warmest
Warmest since:
2015
Ties: 1897, 1907, 1914, 1924, 1948, 1975
Jun 1955–May 1957
24-Month
57.1°F
(13.9°C)
57.4°F
(14.1°C)
-0.3°F
(-0.2°C)
37th Coolest
Coolest since:
1913, 1917
90th Warmest
Warmest since:
2015
Ties: 1924, 1925, 1930, 1942, 1967, 1972, 1975, 1976, 1977, 1999
Jun 1954–May 1957
36-Month
56.7°F
(13.7°C)
57.4°F
(14.1°C)
-0.7°F
(-0.4°C)
18th Coolest
Coolest since:
1913, 1917
108th Warmest
Warmest since:
2016
Ties: 1898, 1908
Jun 1953–May 1957
48-Month
57.0°F
(13.9°C)
57.4°F
(14.1°C)
-0.4°F
(-0.2°C)
32nd Coolest
Coolest since:
1913
93rd Warmest
Warmest since:
2016, 2017, 2018
Ties: 1900, 1902, 1908, 1947, 1956, 1967, 1974, 1975, 1976
Jun 1952–May 1957
60-Month
57.0°F
(13.9°C)
57.3°F
(14.1°C)
-0.3°F
(-0.2°C)
33rd Coolest
Coolest since:
1913, 1917
91st Warmest
Warmest since:
2018
Ties: 1908, 1933, 1946, 1975, 1976, 1977

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