Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1905

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
May 1905
1-Month
56.9°F
(13.8°C)
60.7°F
(15.9°C)
-3.8°F
(-2.1°C)
9th Coolest
Coolest since:
1977
120th Warmest
Warmest since:
2001
Ties: 2010
Apr–May 1905
2-Month
55.7°F
(13.2°C)
57.4°F
(14.1°C)
-1.7°F
(-0.9°C)
25th Coolest
Coolest since:
1967
104th Warmest
Warmest since:
1992
Ties: 1901, 1908, 1915, 1922, 1944, 1977, 1995
Mar–May 1905
3-Month
54.0°F
(12.2°C)
54.5°F
(12.5°C)
-0.5°F
(-0.3°C)
50th Coolest
Coolest since:
1917
79th Warmest
Warmest since:
1934
Ties: 1915, 1958, 1961, 1970
Feb–May 1905
4-Month
52.3°F
(11.3°C)
52.2°F
(11.2°C)
0.1°F
(0.1°C)
61st Coolest
Coolest since:
1917
68th Warmest
Warmest since:
1934
Ties: 1951, 2003
Jan–May 1905
5-Month
51.0°F
(10.6°C)
50.2°F
(10.1°C)
0.8°F
(0.5°C)
79th Coolest
Coolest since:
1917
50th Warmest
Warmest since:
2015
Ties: 1970
Dec 1904–May 1905
6-Month
49.7°F
(9.8°C)
49.1°F
(9.5°C)
0.6°F
(0.3°C)
77th Coolest
Coolest since:
1917
51st Warmest
Warmest since:
2015
Ties: 1924, 1995
Nov 1904–May 1905
7-Month
49.9°F
(9.9°C)
49.1°F
(9.5°C)
0.8°F
(0.4°C)
79th Coolest
Coolest since:
1917
49th Warmest
Warmest since:
2015
Ties: 1989
Oct 1904–May 1905
8-Month
51.0°F
(10.6°C)
50.4°F
(10.2°C)
0.6°F
(0.4°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
2015
Ties: 1900, 1993, 2005
Sep 1904–May 1905
9-Month
53.0°F
(11.7°C)
52.4°F
(11.3°C)
0.6°F
(0.4°C)
81st Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2015
Ties: 1938, 1941, 2005
Aug 1904–May 1905
10-Month
55.1°F
(12.8°C)
54.6°F
(12.6°C)
0.5°F
(0.2°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest to Date
2015
Ties: 1990
Jul 1904–May 1905
11-Month
56.7°F
(13.7°C)
56.4°F
(13.6°C)
0.3°F
(0.1°C)
72nd Coolest
Coolest since:
1917
56th Warmest
Warmest to Date
2015
Ties: 1928, 1947, 1963, 2011
Jun 1904–May 1905
12-Month
57.8°F
(14.3°C)
57.4°F
(14.1°C)
0.4°F
(0.2°C)
74th Coolest
Coolest since:
1917
54th Warmest
Warmest to Date
2015
Ties: 1926
Dec 1903–May 1905
18-Month
54.8°F
(12.7°C)
54.6°F
(12.6°C)
0.2°F
(0.1°C)
73rd Coolest
Coolest since:
1917
54th Warmest
Warmest to Date
2015
Ties: 1932, 1936, 1939, 1943, 1954, 1980
Jun 1903–May 1905
24-Month
57.5°F
(14.2°C)
57.4°F
(14.1°C)
0.1°F
(0.1°C)
68th Coolest
Coolest since:
1913, 1917
59th Warmest
Warmest to Date
2015
Ties: 1919, 1947, 1952, 1970, 1971, 1980, 1984
Jun 1902–May 1905
36-Month
56.9°F
(13.8°C)
57.4°F
(14.1°C)
-0.5°F
(-0.3°C)
24th Coolest
Coolest since:
1913, 1917
102nd Warmest
Warmest since:
2016
Ties: 1900, 1933, 1951, 1966, 1973, 1975
Jun 1901–May 1905
48-Month
56.9°F
(13.8°C)
57.4°F
(14.1°C)
-0.5°F
(-0.3°C)
26th Coolest
Coolest since:
1913
99th Warmest
Warmest since:
2016, 2017, 2018
Ties: 1906, 1925, 1948, 1955, 1958
Jun 1900–May 1905
60-Month
56.8°F
(13.8°C)
57.3°F
(14.1°C)
-0.5°F
(-0.3°C)
21st Coolest
Coolest since:
1913, 1917
103rd Warmest
Warmest since:
2018
Ties: 1902, 1904, 1909, 1948

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