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 1986

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2023)
Warmest/Coolest
Since
Record
May 1986
1-Month
62.2°F
(16.8°C)
60.7°F
(15.9°C)
1.5°F
(0.9°C)
86th Coolest
Coolest since:
1977
44th Warmest
Warmest since:
2001
Ties: 1941, 1943, 2016
Apr–May 1986
2-Month
58.4°F
(14.7°C)
57.4°F
(14.1°C)
1.0°F
(0.6°C)
77th Coolest
Coolest since:
1967
53rd Warmest
Warmest since:
1992
Ties: 2019
Mar–May 1986
3-Month
56.8°F
(13.8°C)
54.5°F
(12.5°C)
2.3°F
(1.3°C)
106th Coolest
Coolest since:
1917
24th Warmest
Warmest since:
1934
Ties: 1936, 1972, 1993
Feb–May 1986
4-Month
54.8°F
(12.7°C)
52.2°F
(11.2°C)
2.6°F
(1.5°C)
115th Coolest
Coolest since:
1917
15th Warmest
Warmest since:
1934
Ties: 2000, 2022
Jan–May 1986
5-Month
53.6°F
(12.0°C)
50.2°F
(10.1°C)
3.4°F
(1.9°C)
123rd Coolest
Coolest since:
1917
7th Warmest
Warmest since:
2015
Dec 1985–May 1986
6-Month
51.9°F
(11.1°C)
49.1°F
(9.5°C)
2.8°F
(1.6°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 1940, 2016
Nov 1985–May 1986
7-Month
51.0°F
(10.6°C)
49.1°F
(9.5°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2015
Oct 1985–May 1986
8-Month
52.0°F
(11.1°C)
50.4°F
(10.2°C)
1.6°F
(0.9°C)
106th Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
2015
Sep 1985–May 1986
9-Month
53.4°F
(11.9°C)
52.4°F
(11.3°C)
1.0°F
(0.6°C)
94th Coolest
Coolest since:
1917
35th Warmest
Warmest since:
2015
Ties: 1914
Aug 1985–May 1986
10-Month
55.4°F
(13.0°C)
54.6°F
(12.6°C)
0.8°F
(0.4°C)
91st Coolest
Coolest since:
1917
38th Warmest
Warmest since:
2015
Ties: 1970, 1980, 1987, 2001
Jul 1985–May 1986
11-Month
57.3°F
(14.1°C)
56.4°F
(13.6°C)
0.9°F
(0.5°C)
96th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2015
Ties: 2023
Jun 1985–May 1986
12-Month
58.6°F
(14.8°C)
57.4°F
(14.1°C)
1.2°F
(0.7°C)
105th Coolest
Coolest since:
1917
24th Warmest
Warmest since:
2015
Ties: 1968, 1981, 1989, 2023
Dec 1984–May 1986
18-Month
55.4°F
(13.0°C)
54.6°F
(12.6°C)
0.8°F
(0.4°C)
90th Coolest
Coolest since:
1917
38th Warmest
Warmest since:
2015
Ties: 1978, 1985, 2010, 2012
Jun 1984–May 1986
24-Month
58.0°F
(14.4°C)
57.4°F
(14.1°C)
0.6°F
(0.3°C)
84th Coolest
Coolest since:
1913, 1917
44th Warmest
Warmest since:
2015
Ties: 1985
Jun 1983–May 1986
36-Month
58.2°F
(14.6°C)
57.4°F
(14.1°C)
0.8°F
(0.5°C)
90th Coolest
Coolest since:
1913, 1917
37th Warmest
Warmest since:
2016
Ties: 2001
Jun 1982–May 1986
48-Month
57.8°F
(14.3°C)
57.4°F
(14.1°C)
0.4°F
(0.2°C)
77th Coolest
Coolest since:
1913
49th Warmest
Warmest since:
2016, 2017, 2018
Ties: 1936, 1942, 1959, 1963
Jun 1981–May 1986
60-Month
57.9°F
(14.4°C)
57.3°F
(14.1°C)
0.6°F
(0.3°C)
81st Coolest
Coolest since:
1913, 1917
44th Warmest
Warmest since:
2018
Ties: 1940, 1943, 1960, 1981, 1985

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