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 1959

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
May 1959
1-Month		59.3°F
(15.2°C)		60.7°F
(15.9°C)		-1.4°F
(-0.7°C)		34th Coolest
Coolest since:
1977
95th Warmest
Warmest since:
2001
Ties: 1965
Apr–May 1959
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: 1973, 1984, 2022
Mar–May 1959
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: 1984, 1994, 2009
Feb–May 1959
4-Month		53.4°F
(11.9°C)		52.2°F
(11.2°C)		1.2°F
(0.7°C)		87th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
1934
Ties: 1966
Jan–May 1959
5-Month		51.9°F
(11.1°C)		50.2°F
(10.1°C)		1.7°F
(1.0°C)		103rd Coolest
Coolest since:
1917
26th Warmest
Warmest since:
2015
Ties: 1936, 1994
Dec 1958–May 1959
6-Month		51.3°F
(10.7°C)		49.1°F
(9.5°C)		2.2°F
(1.2°C)		111th Coolest
Coolest since:
1917
17th Warmest
Warmest since:
2015
Ties: 1926
Nov 1958–May 1959
7-Month		51.2°F
(10.7°C)		49.1°F
(9.5°C)		2.1°F
(1.2°C)		113th Coolest
Coolest since:
1917
15th Warmest
Warmest since:
2015
Ties: 2007, 2009, 2013
Oct 1958–May 1959
8-Month		52.8°F
(11.6°C)		50.4°F
(10.2°C)		2.4°F
(1.4°C)		117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Ties: 1940, 2022
Sep 1958–May 1959
9-Month		54.7°F
(12.6°C)		52.4°F
(11.3°C)		2.3°F
(1.3°C)		114th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2015
Ties: 2009
Aug 1958–May 1959
10-Month		57.0°F
(13.9°C)		54.6°F
(12.6°C)		2.4°F
(1.3°C)		117th Coolest
Coolest since:
1917
11th Warmest
Warmest since:
2015
Ties: 1997, 2000
Jul 1958–May 1959
11-Month		58.5°F
(14.7°C)		56.4°F
(13.6°C)		2.1°F
(1.1°C)		114th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2015
Ties: 2000
Jun 1958–May 1959
12-Month		59.3°F
(15.2°C)		57.4°F
(14.1°C)		1.9°F
(1.1°C)		112th Coolest
Coolest since:
1917
16th Warmest
Warmest since:
2015
Ties: 2000, 2020
Dec 1957–May 1959
18-Month		56.1°F
(13.4°C)		54.6°F
(12.6°C)		1.5°F
(0.8°C)		111th Coolest
Coolest since:
1917
16th Warmest
Warmest since:
2015
Ties: 1940, 1941, 1987, 2001, 2009, 2020
Jun 1957–May 1959
24-Month		58.4°F
(14.7°C)		57.4°F
(14.1°C)		1.0°F
(0.6°C)		99th Coolest
Coolest since:
1913, 1917
28th Warmest
Warmest since:
2015
Ties: 1940, 1981, 1982, 1987, 1989
Jun 1956–May 1959
36-Month		58.0°F
(14.4°C)		57.4°F
(14.1°C)		0.6°F
(0.3°C)		86th Coolest
Coolest since:
1913, 1917
40th Warmest
Warmest since:
2016
Ties: 1980, 1999, 2012
Jun 1955–May 1959
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
48th Warmest
Warmest since:
2016, 2017, 2018
Ties: 1936, 1942, 1963, 1986
Jun 1954–May 1959
60-Month		57.4°F
(14.1°C)		57.3°F
(14.1°C)		0.1°F
(0.0°C)		52nd Coolest
Coolest since:
1913, 1917
72nd Warmest
Warmest since:
2018
Ties: 1927, 1965, 1969, 1979

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