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, July 2018

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
July 2018 1-Month	79.6°F (26.4°C)	74.7°F (23.7°C)	4.9°F (2.7°C)	127th Coolest	Coolest since: 2017	1987
July 2018 1-Month	79.6°F (26.4°C)	74.7°F (23.7°C)	4.9°F (2.7°C)	2nd Warmest	Warmest to Date	2021
Jun–Jul 2018 2-Month	75.5°F (24.2°C)	71.5°F (21.9°C)	4.0°F (2.3°C)	125th Coolest	Coolest since: 2016	1944
Jun–Jul 2018 2-Month	75.5°F (24.2°C)	71.5°F (21.9°C)	4.0°F (2.3°C)	4th Warmest	Warmest since: 2017	2021
May–Jul 2018 3-Month	71.3°F (21.8°C)	67.9°F (19.9°C)	3.4°F (1.9°C)	122nd Coolest	Coolest since: 2016	1953, 1998
May–Jul 2018 3-Month	71.3°F (21.8°C)	67.9°F (19.9°C)	3.4°F (1.9°C)	7th Warmest	Warmest since: 2017	2021
Apr–Jul 2018 4-Month	67.8°F (19.9°C)	64.5°F (18.1°C)	3.3°F (1.8°C)	125th Coolest	Coolest since: 2017	1944
Apr–Jul 2018 4-Month	67.8°F (19.9°C)	64.5°F (18.1°C)	3.3°F (1.8°C)	4th Warmest	Warmest since: 2014	2021
Mar–Jul 2018 5-Month	64.0°F (17.8°C)	61.3°F (16.3°C)	2.7°F (1.5°C)	116th Coolest	Coolest since: 2012	1912
Mar–Jul 2018 5-Month	64.0°F (17.8°C)	61.3°F (16.3°C)	2.7°F (1.5°C)	13th Warmest	Warmest since: 2017	2013, 2014
Feb–Jul 2018 6-Month	61.1°F (16.2°C)	58.6°F (14.8°C)	2.5°F (1.4°C)	114th Coolest	Coolest since: 2012	1948
	61.1°F (16.2°C)	58.6°F (14.8°C)	2.5°F (1.4°C)	15th Warmest	Warmest since: 2017	2015
	Ties: 1997
Jan–Jul 2018 7-Month	59.4°F (15.2°C)	56.3°F (13.5°C)	3.1°F (1.7°C)	123rd Coolest	Coolest since: 2017	1955
Jan–Jul 2018 7-Month	59.4°F (15.2°C)	56.3°F (13.5°C)	3.1°F (1.7°C)	6th Warmest	Warmest since: 2016	2014
Dec 2017–Jul 2018 8-Month	57.9°F (14.4°C)	54.7°F (12.6°C)	3.2°F (1.8°C)	124th Coolest	Coolest since: 2017	1917
Dec 2017–Jul 2018 8-Month	57.9°F (14.4°C)	54.7°F (12.6°C)	3.2°F (1.8°C)	4th Warmest	Warmest since: 2015	2015
Nov 2017–Jul 2018 9-Month	57.4°F (14.1°C)	54.1°F (12.3°C)	3.3°F (1.8°C)	125th Coolest	Coolest since: 2017	1917
Nov 2017–Jul 2018 9-Month	57.4°F (14.1°C)	54.1°F (12.3°C)	3.3°F (1.8°C)	3rd Warmest	Warmest since: 2015	2015
Oct 2017–Jul 2018 10-Month	57.8°F (14.3°C)	54.6°F (12.6°C)	3.2°F (1.7°C)	124th Coolest	Coolest since: 2017	1917
	57.8°F (14.3°C)	54.6°F (12.6°C)	3.2°F (1.7°C)	4th Warmest	Warmest since: 2015	2015
	Ties: 1996
Sep 2017–Jul 2018 11-Month	58.9°F (14.9°C)	55.9°F (13.3°C)	3.0°F (1.6°C)	123rd Coolest	Coolest since: 2017	1917
Sep 2017–Jul 2018 11-Month	58.9°F (14.9°C)	55.9°F (13.3°C)	3.0°F (1.6°C)	5th Warmest	Warmest since: 2015	2015
Aug 2017–Jul 2018 12-Month	60.5°F (15.8°C)	57.4°F (14.1°C)	3.1°F (1.7°C)	125th Coolest	Coolest since: 2017	1917
Aug 2017–Jul 2018 12-Month	60.5°F (15.8°C)	57.4°F (14.1°C)	3.1°F (1.7°C)	3rd Warmest	Warmest since: 2015	2015
Feb 2017–Jul 2018 18-Month	61.0°F (16.1°C)	57.8°F (14.3°C)	3.2°F (1.8°C)	124th Coolest	Coolest since: 2017	1913, 1949
Feb 2017–Jul 2018 18-Month	61.0°F (16.1°C)	57.8°F (14.3°C)	3.2°F (1.8°C)	4th Warmest	Warmest since: 2016	2015
Aug 2016–Jul 2018 24-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	121st Coolest	Coolest since: 2017	1913
Aug 2016–Jul 2018 24-Month	60.1°F (15.6°C)	57.4°F (14.1°C)	2.7°F (1.5°C)	6th Warmest	Warmest since: 2016	2015
Aug 2015–Jul 2018 36-Month	60.1°F (15.6°C)	57.3°F (14.1°C)	2.8°F (1.5°C)	121st Coolest	Coolest since: 2014	1913
Aug 2015–Jul 2018 36-Month	60.1°F (15.6°C)	57.3°F (14.1°C)	2.8°F (1.5°C)	5th Warmest	Warmest since: 2017	2015, 2016
Aug 2014–Jul 2018 48-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
	60.4°F (15.8°C)	57.3°F (14.1°C)	3.1°F (1.7°C)	2nd Warmest	Warmest since: 2017	2016
	Ties: 2017
Aug 2013–Jul 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
	60.4°F (15.8°C)	57.3°F (14.1°C)	3.1°F (1.7°C)	1st Warmest	Warmest since: 2017	2017, 2018
	Ties: 2017

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings