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 1913

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1913
1-Month
60.4°F
(15.8°C)
60.7°F
(15.9°C)
-0.3°F
(-0.1°C)
45th Coolest
Coolest since:
1977
84th Warmest
Warmest since:
2001
Ties: 1920, 1932, 1999
Apr–May 1913
2-Month
56.6°F
(13.7°C)
57.4°F
(14.1°C)
-0.8°F
(-0.4°C)
46th Coolest
Coolest since:
1967
83rd Warmest
Warmest since:
1992
Ties: 1909, 1923, 1932, 1945
Mar–May 1913
3-Month
53.2°F
(11.8°C)
54.5°F
(12.5°C)
-1.3°F
(-0.7°C)
30th Coolest
Coolest since:
1917
99th Warmest
Warmest since:
1934
Ties: 1983, 2011
Feb–May 1913
4-Month
50.6°F
(10.3°C)
52.2°F
(11.2°C)
-1.6°F
(-0.9°C)
17th Coolest
Coolest since:
1917
112th Warmest
Warmest since:
1934
Ties: 1902, 1909, 1971
Jan–May 1913
5-Month
48.3°F
(9.1°C)
50.3°F
(10.2°C)
-2.0°F
(-1.1°C)
9th Coolest
Coolest since:
1917
120th Warmest
Warmest since:
2015
Dec 1912–May 1913
6-Month
47.1°F
(8.4°C)
49.0°F
(9.4°C)
-1.9°F
(-1.0°C)
9th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
2015
Ties: 1929
Nov 1912–May 1913
7-Month
47.5°F
(8.6°C)
49.1°F
(9.5°C)
-1.6°F
(-0.9°C)
12th Coolest
Coolest since:
1917
116th Warmest
Warmest since:
2015
Oct 1912–May 1913
8-Month
48.4°F
(9.1°C)
50.4°F
(10.2°C)
-2.0°F
(-1.1°C)
4th Coolest
Coolest since:
1917
124th Warmest
Warmest since:
2015
Ties: 1903
Sep 1912–May 1913
9-Month
50.4°F
(10.2°C)
52.5°F
(11.4°C)
-2.1°F
(-1.2°C)
3rd Coolest
Coolest since:
1917
125th Warmest
Warmest since:
2015
Aug 1912–May 1913
10-Month
52.4°F
(11.3°C)
54.6°F
(12.6°C)
-2.2°F
(-1.3°C)
3rd Coolest
Coolest since:
1917
125th Warmest
Warmest since:
2015
Jul 1912–May 1913
11-Month
54.1°F
(12.3°C)
56.3°F
(13.5°C)
-2.2°F
(-1.2°C)
3rd Coolest
Coolest since:
1917
125th Warmest
Warmest since:
2015
Jun 1912–May 1913
12-Month
55.3°F
(12.9°C)
57.4°F
(14.1°C)
-2.1°F
(-1.2°C)
3rd Coolest
Coolest since:
1917
125th Warmest
Warmest since:
2015
Dec 1911–May 1913
18-Month
52.7°F
(11.5°C)
54.6°F
(12.6°C)
-1.9°F
(-1.1°C)
3rd Coolest
Coolest since:
1917
124th Warmest
Warmest since:
2015
Jun 1911–May 1913
24-Month
55.4°F
(13.0°C)
57.3°F
(14.1°C)
-1.9°F
(-1.1°C)
1st Coolest
Coolest since:
1913, 1917
126th Warmest
Warmest since:
2015
Ties: 1917
Jun 1910–May 1913
36-Month
55.8°F
(13.2°C)
57.3°F
(14.1°C)
-1.5°F
(-0.9°C)
1st Coolest
Coolest since:
1913, 1917
125th Warmest
Warmest since:
2016
Ties: 1917
Jun 1909–May 1913
48-Month
56.1°F
(13.4°C)
57.4°F
(14.1°C)
-1.3°F
(-0.7°C)
1st Coolest
Coolest since:
1913
124th Warmest
Warmest since:
2016, 2017, 2018
Jun 1908–May 1913
60-Month
56.1°F
(13.4°C)
57.3°F
(14.1°C)
-1.2°F
(-0.7°C)
1st Coolest
Coolest since:
1913, 1917
123rd Warmest
Warmest since:
2018
Ties: 1917

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