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 1940

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
June 1940 1-Month	72.5°F (22.5°C)	68.3°F (20.2°C)	4.2°F (2.3°C)	120th Coolest	Coolest since: 1939	1923
June 1940 1-Month	72.5°F (22.5°C)	68.3°F (20.2°C)	4.2°F (2.3°C)	9th Warmest	Warmest since: 1918	2021
May–Jun 1940 2-Month	68.6°F (20.3°C)	64.5°F (18.1°C)	4.1°F (2.2°C)	125th Coolest	Coolest since: 1939	1953
May–Jun 1940 2-Month	68.6°F (20.3°C)	64.5°F (18.1°C)	4.1°F (2.2°C)	4th Warmest	Warmest to Date	2001
Apr–Jun 1940 3-Month	64.3°F (17.9°C)	61.0°F (16.1°C)	3.3°F (1.8°C)	121st Coolest	Coolest since: 1939	1967, 1998
Apr–Jun 1940 3-Month	64.3°F (17.9°C)	61.0°F (16.1°C)	3.3°F (1.8°C)	8th Warmest	Warmest to Date	2021
Mar–Jun 1940 4-Month	61.1°F (16.2°C)	57.9°F (14.4°C)	3.2°F (1.8°C)	116th Coolest	Coolest since: 1939	1917
	61.1°F (16.2°C)	57.9°F (14.4°C)	3.2°F (1.8°C)	13th Warmest	Warmest since: 1934	2015
	Ties: 2001
Feb–Jun 1940 5-Month	58.2°F (14.6°C)	55.4°F (13.0°C)	2.8°F (1.6°C)	115th Coolest	Coolest since: 1939	1917
Feb–Jun 1940 5-Month	58.2°F (14.6°C)	55.4°F (13.0°C)	2.8°F (1.6°C)	14th Warmest	Warmest since: 1934	2015
Jan–Jun 1940 6-Month	56.1°F (13.4°C)	53.3°F (11.8°C)	2.8°F (1.6°C)	120th Coolest	Coolest since: 1939	1917
	56.1°F (13.4°C)	53.3°F (11.8°C)	2.8°F (1.6°C)	9th Warmest	Warmest since: 1934	2015
	Ties: 1997, 2022
Dec 1939–Jun 1940 7-Month	54.8°F (12.7°C)	51.8°F (11.0°C)	3.0°F (1.7°C)	122nd Coolest	Coolest since: 1939	1917
	54.8°F (12.7°C)	51.8°F (11.0°C)	3.0°F (1.7°C)	6th Warmest	Warmest since: 1934	2015
	Ties: 2018
Nov 1939–Jun 1940 8-Month	54.4°F (12.4°C)	51.5°F (10.8°C)	2.9°F (1.6°C)	122nd Coolest	Coolest since: 1939	1917
	54.4°F (12.4°C)	51.5°F (10.8°C)	2.9°F (1.6°C)	6th Warmest	Warmest since: 1934	2015
	Ties: 2000, 2021, 2022
Oct 1939–Jun 1940 9-Month	55.0°F (12.8°C)	52.4°F (11.3°C)	2.6°F (1.5°C)	118th Coolest	Coolest since: 1939	1917
Oct 1939–Jun 1940 9-Month	55.0°F (12.8°C)	52.4°F (11.3°C)	2.6°F (1.5°C)	10th Warmest	Warmest since: 1934	2015
Sep 1939–Jun 1940 10-Month	56.4°F (13.6°C)	54.0°F (12.2°C)	2.4°F (1.4°C)	115th Coolest	Coolest since: 1939	1917
Sep 1939–Jun 1940 10-Month	56.4°F (13.6°C)	54.0°F (12.2°C)	2.4°F (1.4°C)	13th Warmest	Warmest since: 1934	2015
Aug 1939–Jun 1940 11-Month	58.1°F (14.5°C)	55.8°F (13.2°C)	2.3°F (1.3°C)	115th Coolest	Coolest since: 1939	1917
	58.1°F (14.5°C)	55.8°F (13.2°C)	2.3°F (1.3°C)	13th Warmest	Warmest since: 1934	2015
	Ties: 2004
Jul 1939–Jun 1940 12-Month	59.6°F (15.3°C)	57.4°F (14.1°C)	2.2°F (1.2°C)	115th Coolest	Coolest since: 1939	1917
	59.6°F (15.3°C)	57.4°F (14.1°C)	2.2°F (1.2°C)	13th Warmest	Warmest since: 1934	2015
	Ties: 1959, 2000
Jan 1939–Jun 1940 18-Month	57.6°F (14.2°C)	56.0°F (13.3°C)	1.6°F (0.9°C)	115th Coolest	Coolest since: 1939	1917
	57.6°F (14.2°C)	56.0°F (13.3°C)	1.6°F (0.9°C)	13th Warmest	Warmest to Date	2015
	Ties: 1959, 1987, 2002, 2003, 2007, 2009
Jul 1938–Jun 1940 24-Month	58.6°F (14.8°C)	57.4°F (14.1°C)	1.2°F (0.7°C)	104th Coolest	Coolest since: 1939	1913
	58.6°F (14.8°C)	57.4°F (14.1°C)	1.2°F (0.7°C)	23rd Warmest	Warmest since: 1935	2015
	Ties: 1941, 1981, 1992, 2002, 2010
Jul 1937–Jun 1940 36-Month	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 1939	1913, 1917
	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	26th Warmest	Warmest since: 1936	2016
	Ties: 1960, 1992, 1993, 2001
Jul 1936–Jun 1940 48-Month	58.0°F (14.4°C)	57.4°F (14.1°C)	0.6°F (0.3°C)	84th Coolest	Coolest since: 1939	1913
	58.0°F (14.4°C)	57.4°F (14.1°C)	0.6°F (0.3°C)	41st Warmest	Warmest since: 1937	2016
	Ties: 1984, 1991, 2001
Jul 1935–Jun 1940 60-Month	58.0°F (14.4°C)	57.4°F (14.1°C)	0.6°F (0.3°C)	85th Coolest	Coolest since: 1939	1913, 1917
	58.0°F (14.4°C)	57.4°F (14.1°C)	0.6°F (0.3°C)	39th Warmest	Warmest since: 1938	2018
	Ties: 1960, 1962, 1981, 1984, 1985, 1991

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings