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 1896

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 1896
1-Month
58.9°F
(14.9°C)
60.7°F
(15.9°C)
-1.8°F
(-1.0°C)
32nd Coolest
Coolest to Date
1977
97th Warmest
Warmest since:
2001
Ties: 1957
Apr–May 1896
2-Month
54.0°F
(12.2°C)
57.4°F
(14.1°C)
-3.4°F
(-1.9°C)
5th Coolest
Coolest to Date
1967
124th Warmest
Warmest since:
1992
Ties: 1975
Mar–May 1896
3-Month
52.5°F
(11.4°C)
54.5°F
(12.5°C)
-2.0°F
(-1.1°C)
17th Coolest
Coolest to Date
1917
112th Warmest
Warmest since:
1934
Ties: 1963
Feb–May 1896
4-Month
51.2°F
(10.7°C)
52.2°F
(11.2°C)
-1.0°F
(-0.5°C)
33rd Coolest
Coolest to Date
1917
96th Warmest
Warmest since:
1934
Ties: 1919, 1962
Jan–May 1896
5-Month
50.0°F
(10.0°C)
50.2°F
(10.1°C)
-0.2°F
(-0.1°C)
53rd Coolest
Coolest since:
1917
76th Warmest
Warmest to Date
2015
Ties: 1907, 1927, 1946, 1963, 1965
Dec 1895–May 1896
6-Month
48.5°F
(9.2°C)
49.1°F
(9.5°C)
-0.6°F
(-0.3°C)
39th Coolest
Coolest to Date
1917
89th Warmest
Warmest to Date
2015
Ties: 1906, 1908, 1953, 1977, 1999
Nov 1895–May 1896
7-Month
48.5°F
(9.2°C)
49.1°F
(9.5°C)
-0.6°F
(-0.3°C)
37th Coolest
Coolest to Date
1917
91st Warmest
Warmest to Date
2015
Ties: 1906
Oct 1895–May 1896
8-Month
49.9°F
(9.9°C)
50.4°F
(10.2°C)
-0.5°F
(-0.3°C)
38th Coolest
Coolest to Date
1917
90th Warmest
Warmest to Date
2015
Ties: 1967
Sep 1895–May 1896
9-Month
51.7°F
(10.9°C)
52.4°F
(11.3°C)
-0.7°F
(-0.4°C)
27th Coolest
Coolest to Date
1917
101st Warmest
Warmest to Date
2015
Ties: 1901, 1979, 1983
Aug 1895–May 1896
10-Month
53.7°F
(12.1°C)
54.6°F
(12.6°C)
-0.9°F
(-0.5°C)
22nd Coolest
Coolest to Date
1917
106th Warmest
Warmest to Date
2015
Ties: 1908, 1915, 1962, 1969
Jul 1895–May 1896
11-Month
55.4°F
(13.0°C)
56.4°F
(13.6°C)
-1.0°F
(-0.6°C)
15th Coolest
Coolest to Date
1917
113th Warmest
Warmest to Date
2015
Ties: 1901, 1919, 1973
Jun 1895–May 1896
12-Month
56.5°F
(13.6°C)
57.4°F
(14.1°C)
-0.9°F
(-0.5°C)
19th Coolest
Coolest to Date
1917
109th Warmest
Warmest to Date
2015
Ties: 1915

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