Regional Rankings

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Month:

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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 2018

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2018 1-Month	63.0°F (17.2°C)	60.7°F (15.9°C)	2.3°F (1.3°C)	96th Coolest	Coolest since: 2016	1977
May 2018 1-Month	63.0°F (17.2°C)	60.7°F (15.9°C)	2.3°F (1.3°C)	33rd Warmest	Warmest since: 2017	2001
Apr–May 2018 2-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	107th Coolest	Coolest since: 2017	1967
	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	22nd Warmest	Warmest since: 2016	1992
	Ties: 1926, 2016
Mar–May 2018 3-Month	56.4°F (13.6°C)	54.5°F (12.5°C)	1.9°F (1.1°C)	94th Coolest	Coolest since: 2012	1917
	56.4°F (13.6°C)	54.5°F (12.5°C)	1.9°F (1.1°C)	35th Warmest	Warmest since: 2017	1934
	Ties: 2020
Feb–May 2018 4-Month	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F (1.0°C)	101st Coolest	Coolest since: 2012	1917
	53.9°F (12.2°C)	52.2°F (11.2°C)	1.7°F (1.0°C)	28th Warmest	Warmest since: 2017	1934
	Ties: 1928, 1988, 2009
Jan–May 2018 5-Month	52.9°F (11.6°C)	50.2°F (10.1°C)	2.7°F (1.5°C)	117th Coolest	Coolest since: 2017	1917
	52.9°F (11.6°C)	50.2°F (10.1°C)	2.7°F (1.5°C)	12th Warmest	Warmest since: 2016	2015
	Ties: 1931
Dec 2017–May 2018 6-Month	52.0°F (11.1°C)	49.1°F (9.5°C)	2.9°F (1.6°C)	122nd Coolest	Coolest since: 2017	1917
	52.0°F (11.1°C)	49.1°F (9.5°C)	2.9°F (1.6°C)	6th Warmest	Warmest since: 2015	2015
	Ties: 1996
Nov 2017–May 2018 7-Month	52.2°F (11.2°C)	49.1°F (9.5°C)	3.1°F (1.7°C)	123rd Coolest	Coolest since: 2017	1917
	52.2°F (11.2°C)	49.1°F (9.5°C)	3.1°F (1.7°C)	5th Warmest	Warmest since: 2015	2015
	Ties: 1997
Oct 2017–May 2018 8-Month	53.4°F (11.9°C)	50.4°F (10.2°C)	3.0°F (1.7°C)	122nd Coolest	Coolest since: 2017	1917
	53.4°F (11.9°C)	50.4°F (10.2°C)	3.0°F (1.7°C)	6th Warmest	Warmest since: 2015	2015
	Ties: 2000
Sep 2017–May 2018 9-Month	55.2°F (12.9°C)	52.4°F (11.3°C)	2.8°F (1.6°C)	120th Coolest	Coolest since: 2017	1917
Sep 2017–May 2018 9-Month	55.2°F (12.9°C)	52.4°F (11.3°C)	2.8°F (1.6°C)	8th Warmest	Warmest since: 2015	2015
Aug 2017–May 2018 10-Month	57.5°F (14.2°C)	54.6°F (12.6°C)	2.9°F (1.6°C)	123rd Coolest	Coolest since: 2017	1917
	57.5°F (14.2°C)	54.6°F (12.6°C)	2.9°F (1.6°C)	5th Warmest	Warmest since: 2015	2015
	Ties: 1992
Jul 2017–May 2018 11-Month	59.4°F (15.2°C)	56.4°F (13.6°C)	3.0°F (1.6°C)	125th Coolest	Coolest since: 2017	1917
	59.4°F (15.2°C)	56.4°F (13.6°C)	3.0°F (1.6°C)	3rd Warmest	Warmest since: 2015	2015
	Ties: 1934
Jun 2017–May 2018 12-Month	60.6°F (15.9°C)	57.4°F (14.1°C)	3.2°F (1.8°C)	126th Coolest	Coolest since: 2017	1917
Jun 2017–May 2018 12-Month	60.6°F (15.9°C)	57.4°F (14.1°C)	3.2°F (1.8°C)	2nd Warmest	Warmest since: 2015	2015
Dec 2016–May 2018 18-Month	57.3°F (14.1°C)	54.6°F (12.6°C)	2.7°F (1.5°C)	122nd Coolest	Coolest since: 2017	1917
	57.3°F (14.1°C)	54.6°F (12.6°C)	2.7°F (1.5°C)	5th Warmest	Warmest since: 2016	2015
	Ties: 2014
Jun 2016–May 2018 24-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	123rd Coolest	Coolest since: 2017	1913, 1917
Jun 2016–May 2018 24-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	4th Warmest	Warmest since: 2016	2015
Jun 2015–May 2018 36-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	122nd Coolest	Coolest since: 2014	1913, 1917
	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	4th Warmest	Warmest since: 2017	2016
	Ties: 2022
Jun 2014–May 2018 48-Month	60.4°F (15.8°C)	57.4°F (14.1°C)	3.0°F (1.7°C)	124th Coolest	Coolest since: 2017	1913
	60.4°F (15.8°C)	57.4°F (14.1°C)	3.0°F (1.7°C)	1st Warmest	Warmest since: 2017	2016, 2017, 2018
	Ties: 2016, 2017
Jun 2013–May 2018 60-Month	60.4°F (15.8°C)	57.3°F (14.1°C)	3.1°F (1.7°C)	123rd Coolest	Coolest since: 2017	1913, 1917
Jun 2013–May 2018 60-Month	60.4°F (15.8°C)	57.3°F (14.1°C)	3.1°F (1.7°C)	1st Warmest	Warmest to Date	2018

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings