Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. 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, June 2015

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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
June 2015 1-Month	74.4°F (23.6°C)	68.2°F (20.1°C)	6.2°F (3.5°C)	127th Coolest	Coolest since: 2014	1923
June 2015 1-Month	74.4°F (23.6°C)	68.2°F (20.1°C)	6.2°F (3.5°C)	2nd Warmest	Warmest to Date	2021
May–Jun 2015 2-Month	67.6°F (19.8°C)	64.5°F (18.1°C)	3.1°F (1.7°C)	117th Coolest	Coolest since: 2012	1953
	67.6°F (19.8°C)	64.5°F (18.1°C)	3.1°F (1.7°C)	12th Warmest	Warmest since: 2014	2001
	Ties: 1973, 1981
Apr–Jun 2015 3-Month	64.0°F (17.8°C)	61.0°F (16.1°C)	3.0°F (1.7°C)	119th Coolest	Coolest since: 2012	1967, 1998
	64.0°F (17.8°C)	61.0°F (16.1°C)	3.0°F (1.7°C)	10th Warmest	Warmest since: 2014	2021
	Ties: 2001, 2017
Mar–Jun 2015 4-Month	62.2°F (16.8°C)	57.9°F (14.4°C)	4.3°F (2.4°C)	128th Coolest	Coolest since: 2014	1917
Mar–Jun 2015 4-Month	62.2°F (16.8°C)	57.9°F (14.4°C)	4.3°F (2.4°C)	1st Warmest	Warmest to Date	2015
Feb–Jun 2015 5-Month	60.4°F (15.8°C)	55.4°F (13.0°C)	5.0°F (2.8°C)	128th Coolest	Coolest since: 2014	1917
Feb–Jun 2015 5-Month	60.4°F (15.8°C)	55.4°F (13.0°C)	5.0°F (2.8°C)	1st Warmest	Warmest to Date	2015
Jan–Jun 2015 6-Month	58.4°F (14.7°C)	53.2°F (11.8°C)	5.2°F (2.9°C)	128th Coolest	Coolest since: 2014	1917
Jan–Jun 2015 6-Month	58.4°F (14.7°C)	53.2°F (11.8°C)	5.2°F (2.9°C)	1st Warmest	Warmest to Date	2015
Dec 2014–Jun 2015 7-Month	56.8°F (13.8°C)	51.8°F (11.0°C)	5.0°F (2.8°C)	127th Coolest	Coolest since: 2014	1917
Dec 2014–Jun 2015 7-Month	56.8°F (13.8°C)	51.8°F (11.0°C)	5.0°F (2.8°C)	1st Warmest	Warmest to Date	2015
Nov 2014–Jun 2015 8-Month	56.3°F (13.5°C)	51.5°F (10.8°C)	4.8°F (2.7°C)	127th Coolest	Coolest since: 2014	1917
Nov 2014–Jun 2015 8-Month	56.3°F (13.5°C)	51.5°F (10.8°C)	4.8°F (2.7°C)	1st Warmest	Warmest to Date	2015
Oct 2014–Jun 2015 9-Month	57.2°F (14.0°C)	52.4°F (11.3°C)	4.8°F (2.7°C)	127th Coolest	Coolest since: 2014	1917
Oct 2014–Jun 2015 9-Month	57.2°F (14.0°C)	52.4°F (11.3°C)	4.8°F (2.7°C)	1st Warmest	Warmest to Date	2015
Sep 2014–Jun 2015 10-Month	58.7°F (14.8°C)	54.0°F (12.2°C)	4.7°F (2.6°C)	127th Coolest	Coolest since: 2014	1917
Sep 2014–Jun 2015 10-Month	58.7°F (14.8°C)	54.0°F (12.2°C)	4.7°F (2.6°C)	1st Warmest	Warmest to Date	2015
Aug 2014–Jun 2015 11-Month	60.2°F (15.7°C)	55.8°F (13.2°C)	4.4°F (2.5°C)	127th Coolest	Coolest since: 2014	1917
Aug 2014–Jun 2015 11-Month	60.2°F (15.7°C)	55.8°F (13.2°C)	4.4°F (2.5°C)	1st Warmest	Warmest to Date	2015
Jul 2014–Jun 2015 12-Month	61.7°F (16.5°C)	57.4°F (14.1°C)	4.3°F (2.4°C)	127th Coolest	Coolest since: 2014	1917
Jul 2014–Jun 2015 12-Month	61.7°F (16.5°C)	57.4°F (14.1°C)	4.3°F (2.4°C)	1st Warmest	Warmest to Date	2015
Jan 2014–Jun 2015 18-Month	60.4°F (15.8°C)	55.9°F (13.3°C)	4.5°F (2.5°C)	127th Coolest	Coolest since: 2014	1917
Jan 2014–Jun 2015 18-Month	60.4°F (15.8°C)	55.9°F (13.3°C)	4.5°F (2.5°C)	1st Warmest	Warmest to Date	2015
Jul 2013–Jun 2015 24-Month	61.0°F (16.1°C)	57.4°F (14.1°C)	3.6°F (2.0°C)	126th Coolest	Coolest since: 2014	1913
Jul 2013–Jun 2015 24-Month	61.0°F (16.1°C)	57.4°F (14.1°C)	3.6°F (2.0°C)	1st Warmest	Warmest to Date	2015
Jul 2012–Jun 2015 36-Month	60.6°F (15.9°C)	57.3°F (14.1°C)	3.3°F (1.8°C)	124th Coolest	Coolest since: 2014	1913, 1917
Jul 2012–Jun 2015 36-Month	60.6°F (15.9°C)	57.3°F (14.1°C)	3.3°F (1.8°C)	2nd Warmest	Warmest to Date	2016
Jul 2011–Jun 2015 48-Month	60.2°F (15.7°C)	57.4°F (14.1°C)	2.8°F (1.6°C)	121st Coolest	Coolest since: 2014	1913
Jul 2011–Jun 2015 48-Month	60.2°F (15.7°C)	57.4°F (14.1°C)	2.8°F (1.6°C)	4th Warmest	Warmest to Date	2016
Jul 2010–Jun 2015 60-Month	59.6°F (15.3°C)	57.3°F (14.1°C)	2.3°F (1.2°C)	116th Coolest	Coolest since: 2014	1913, 1917
Jul 2010–Jun 2015 60-Month	59.6°F (15.3°C)	57.3°F (14.1°C)	2.3°F (1.2°C)	8th Warmest	Warmest to Date	2018

Citing This Page

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