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 2016

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
May 2016
1-Month		62.2°F
(16.8°C)		60.7°F
(15.9°C)		1.5°F
(0.9°C)		85th Coolest
Coolest since:
1977
44th Warmest
Warmest since:
2001
Ties: 1941, 1943, 1986
Apr–May 2016
2-Month		60.1°F
(15.6°C)		57.4°F
(14.1°C)		2.7°F
(1.5°C)		107th Coolest
Coolest since:
1967
22nd Warmest
Warmest since:
1992
Ties: 1926, 2018
Mar–May 2016
3-Month		57.5°F
(14.2°C)		54.5°F
(12.5°C)		3.0°F
(1.7°C)		115th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
1934
Ties: 1947, 2017
Feb–May 2016
4-Month		56.1°F
(13.4°C)		52.2°F
(11.2°C)		3.9°F
(2.2°C)		124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
1934
Jan–May 2016
5-Month		53.8°F
(12.1°C)		50.2°F
(10.1°C)		3.6°F
(2.0°C)		125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2015
Ties: 1992
Dec 2015–May 2016
6-Month		51.9°F
(11.1°C)		49.1°F
(9.5°C)		2.8°F
(1.6°C)		120th Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 1940, 1986
Nov 2015–May 2016
7-Month		51.3°F
(10.7°C)		49.1°F
(9.5°C)		2.2°F
(1.2°C)		114th Coolest
Coolest since:
1917
14th Warmest
Warmest since:
2015
Oct 2015–May 2016
8-Month		53.0°F
(11.7°C)		50.4°F
(10.2°C)		2.6°F
(1.5°C)		118th Coolest
Coolest since:
1917
10th Warmest
Warmest since:
2015
Sep 2015–May 2016
9-Month		55.1°F
(12.8°C)		52.4°F
(11.3°C)		2.7°F
(1.5°C)		119th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
2015
Aug 2015–May 2016
10-Month		57.2°F
(14.0°C)		54.6°F
(12.6°C)		2.6°F
(1.4°C)		120th Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2015
Ties: 2013, 2022
Jul 2015–May 2016
11-Month		58.9°F
(14.9°C)		56.4°F
(13.6°C)		2.5°F
(1.3°C)		119th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
2015
Ties: 1997, 2004
Jun 2015–May 2016
12-Month		60.2°F
(15.7°C)		57.4°F
(14.1°C)		2.8°F
(1.6°C)		122nd Coolest
Coolest since:
1917
6th Warmest
Warmest since:
2015
Dec 2014–May 2016
18-Month		58.0°F
(14.4°C)		54.6°F
(12.6°C)		3.4°F
(1.8°C)		125th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
2015
Jun 2014–May 2016
24-Month		60.8°F
(16.0°C)		57.4°F
(14.1°C)		3.4°F
(1.9°C)		125th Coolest
Coolest since:
1913, 1917
2nd Warmest
Warmest since:
2015
Jun 2013–May 2016
36-Month		60.7°F
(15.9°C)		57.4°F
(14.1°C)		3.3°F
(1.8°C)		125th Coolest
Coolest since:
1913, 1917
1st Warmest
Warmest to Date
2016
Jun 2012–May 2016
48-Month		60.4°F
(15.8°C)		57.4°F
(14.1°C)		3.0°F
(1.7°C)		124th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2016, 2017, 2018
Ties: 2017, 2018
Jun 2011–May 2016
60-Month		60.0°F
(15.6°C)		57.3°F
(14.1°C)		2.7°F
(1.5°C)		120th Coolest
Coolest since:
1913, 1917
4th Warmest
Warmest to Date
2018
Ties: 2022

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