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 1948

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1948
1-Month
58.2°F
(14.6°C)
60.7°F
(15.9°C)
-2.5°F
(-1.3°C)
22nd Coolest
Coolest since:
1977
107th Warmest
Warmest since:
2001
Ties: 1902, 1964, 1980
Apr–May 1948
2-Month
54.8°F
(12.7°C)
57.3°F
(14.1°C)
-2.5°F
(-1.4°C)
13th Coolest
Coolest since:
1967
116th Warmest
Warmest since:
1992
Ties: 1921
Mar–May 1948
3-Month
51.4°F
(10.8°C)
54.5°F
(12.5°C)
-3.1°F
(-1.7°C)
4th Coolest
Coolest since:
1917
125th Warmest
Warmest since:
1934
Feb–May 1948
4-Month
49.2°F
(9.6°C)
52.3°F
(11.3°C)
-3.1°F
(-1.7°C)
2nd Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Ties: 1933
Jan–May 1948
5-Month
48.4°F
(9.1°C)
50.2°F
(10.1°C)
-1.8°F
(-1.0°C)
10th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2015
Ties: 1911, 1929, 1964
Dec 1947–May 1948
6-Month
47.3°F
(8.5°C)
49.0°F
(9.4°C)
-1.7°F
(-0.9°C)
11th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
2015
Nov 1947–May 1948
7-Month
47.1°F
(8.4°C)
49.1°F
(9.5°C)
-2.0°F
(-1.1°C)
5th Coolest
Coolest since:
1917
123rd Warmest
Warmest since:
2015
Oct 1947–May 1948
8-Month
48.7°F
(9.3°C)
50.5°F
(10.3°C)
-1.8°F
(-1.0°C)
6th Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2015
Ties: 1929, 1955
Sep 1947–May 1948
9-Month
51.1°F
(10.6°C)
52.4°F
(11.3°C)
-1.3°F
(-0.7°C)
14th Coolest
Coolest since:
1917
114th Warmest
Warmest since:
2015
Ties: 1898, 1937, 1942
Aug 1947–May 1948
10-Month
53.2°F
(11.8°C)
54.6°F
(12.6°C)
-1.4°F
(-0.8°C)
9th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2015
Ties: 1921, 1929, 1942
Jul 1947–May 1948
11-Month
54.9°F
(12.7°C)
56.3°F
(13.5°C)
-1.4°F
(-0.8°C)
7th Coolest
Coolest since:
1917
121st Warmest
Warmest since:
2015
Ties: 1933
Jun 1947–May 1948
12-Month
56.0°F
(13.3°C)
57.4°F
(14.1°C)
-1.4°F
(-0.8°C)
7th Coolest
Coolest since:
1917
121st Warmest
Warmest since:
2015
Ties: 1921
Dec 1946–May 1948
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, 1957, 1975
Jun 1946–May 1948
24-Month
56.8°F
(13.8°C)
57.4°F
(14.1°C)
-0.6°F
(-0.3°C)
23rd Coolest
Coolest since:
1913, 1917
104th Warmest
Warmest since:
2015
Ties: 1898, 1902, 1965
Jun 1945–May 1948
36-Month
57.0°F
(13.9°C)
57.3°F
(14.1°C)
-0.3°F
(-0.2°C)
31st Coolest
Coolest since:
1913, 1917
95th Warmest
Warmest since:
2016
Ties: 1901, 1902, 1944, 1955, 1956, 1974
Jun 1944–May 1948
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: 1905, 1906, 1925, 1955, 1958
Jun 1943–May 1948
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, 1905, 1909

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