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 1984

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
May 1984
1-Month
65.3°F
(18.5°C)
60.7°F
(15.9°C)
4.6°F
(2.6°C)
123rd Coolest
Coolest since:
1977
6th Warmest
Warmest since:
2001
Apr–May 1984
2-Month
59.1°F
(15.1°C)
57.4°F
(14.1°C)
1.7°F
(1.0°C)
95th Coolest
Coolest since:
1967
34th Warmest
Warmest since:
1992
Ties: 1959, 1973, 2022
Mar–May 1984
3-Month
56.7°F
(13.7°C)
54.5°F
(12.5°C)
2.2°F
(1.2°C)
101st Coolest
Coolest since:
1917
28th Warmest
Warmest since:
1934
Ties: 1959, 1994, 2009
Feb–May 1984
4-Month
54.1°F
(12.3°C)
52.2°F
(11.2°C)
1.9°F
(1.1°C)
106th Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
1934
Ties: 2001
Jan–May 1984
5-Month
52.3°F
(11.3°C)
50.2°F
(10.1°C)
2.1°F
(1.2°C)
107th Coolest
Coolest since:
1917
22nd Warmest
Warmest since:
2015
Ties: 1981, 2012
Dec 1983–May 1984
6-Month
51.2°F
(10.7°C)
49.1°F
(9.5°C)
2.1°F
(1.2°C)
109th Coolest
Coolest since:
1917
19th Warmest
Warmest since:
2015
Ties: 2007
Nov 1983–May 1984
7-Month
50.9°F
(10.5°C)
49.1°F
(9.5°C)
1.8°F
(1.0°C)
107th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
2015
Ties: 1931
Oct 1983–May 1984
8-Month
52.2°F
(11.2°C)
50.4°F
(10.2°C)
1.8°F
(1.0°C)
108th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2015
Sep 1983–May 1984
9-Month
54.3°F
(12.4°C)
52.4°F
(11.3°C)
1.9°F
(1.1°C)
110th Coolest
Coolest since:
1917
18th Warmest
Warmest since:
2015
Ties: 2020
Aug 1983–May 1984
10-Month
56.2°F
(13.4°C)
54.6°F
(12.6°C)
1.6°F
(0.8°C)
108th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2015
Ties: 2002
Jul 1983–May 1984
11-Month
57.6°F
(14.2°C)
56.4°F
(13.6°C)
1.2°F
(0.6°C)
100th Coolest
Coolest since:
1917
28th Warmest
Warmest since:
2015
Ties: 2006
Jun 1983–May 1984
12-Month
58.5°F
(14.7°C)
57.4°F
(14.1°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1917
28th Warmest
Warmest since:
2015
Ties: 2012
Dec 1982–May 1984
18-Month
55.3°F
(12.9°C)
54.6°F
(12.6°C)
0.7°F
(0.3°C)
85th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
2015
Ties: 1931, 1990, 1995
Jun 1982–May 1984
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 since:
2015
Ties: 1905, 1919, 1947, 1952, 1970, 1971, 1980
Jun 1981–May 1984
36-Month
57.7°F
(14.3°C)
57.4°F
(14.1°C)
0.3°F
(0.2°C)
74th Coolest
Coolest since:
1913, 1917
52nd Warmest
Warmest since:
2016
Ties: 1928, 1963, 1978
Jun 1980–May 1984
48-Month
58.0°F
(14.4°C)
57.4°F
(14.1°C)
0.6°F
(0.3°C)
85th Coolest
Coolest since:
1913
40th Warmest
Warmest since:
2016, 2017, 2018
Ties: 1937, 1960, 1982
Jun 1979–May 1984
60-Month
58.0°F
(14.4°C)
57.3°F
(14.1°C)
0.7°F
(0.3°C)
84th Coolest
Coolest since:
1913, 1917
40th Warmest
Warmest since:
2018
Ties: 1938, 1941

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