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, October 1990

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
October 1990 1-Month	62.0°F (16.7°C)	59.5°F (15.3°C)	2.5°F (1.4°C)	107th Coolest	Coolest since: 1989	1916
October 1990 1-Month	62.0°F (16.7°C)	59.5°F (15.3°C)	2.5°F (1.4°C)	22nd Warmest	Warmest since: 1988	2020
Sep–Oct 1990 2-Month	65.9°F (18.8°C)	64.0°F (17.8°C)	1.9°F (1.0°C)	106th Coolest	Coolest since: 1989	1916, 1920
	65.9°F (18.8°C)	64.0°F (17.8°C)	1.9°F (1.0°C)	23rd Warmest	Warmest since: 1988	2020
	Ties: 2017
Aug–Oct 1990 3-Month	68.5°F (20.3°C)	67.2°F (19.6°C)	1.3°F (0.7°C)	101st Coolest	Coolest since: 1989	1900
	68.5°F (20.3°C)	67.2°F (19.6°C)	1.3°F (0.7°C)	28th Warmest	Warmest since: 1988	2020
	Ties: 1917
Jul–Oct 1990 4-Month	70.5°F (21.4°C)	69.1°F (20.6°C)	1.4°F (0.8°C)	103rd Coolest	Coolest since: 1989	1912
	70.5°F (21.4°C)	69.1°F (20.6°C)	1.4°F (0.8°C)	26th Warmest	Warmest since: 1988	2020
	Ties: 2002
Jun–Oct 1990 5-Month	70.3°F (21.3°C)	69.0°F (20.6°C)	1.3°F (0.7°C)	105th Coolest	Coolest since: 1989	1912
	70.3°F (21.3°C)	69.0°F (20.6°C)	1.3°F (0.7°C)	24th Warmest	Warmest since: 1988	2020, 2022
	Ties: 1981, 1991, 1994
May–Oct 1990 6-Month	68.6°F (20.3°C)	67.6°F (19.8°C)	1.0°F (0.5°C)	93rd Coolest	Coolest since: 1989	1916
	68.6°F (20.3°C)	67.6°F (19.8°C)	1.0°F (0.5°C)	36th Warmest	Warmest since: 1988	2020
	Ties: 1952, 1959, 1979
Apr–Oct 1990 7-Month	67.1°F (19.5°C)	65.6°F (18.7°C)	1.5°F (0.8°C)	103rd Coolest	Coolest since: 1989	1912
	67.1°F (19.5°C)	65.6°F (18.7°C)	1.5°F (0.8°C)	26th Warmest	Warmest since: 1988	2020
	Ties: 1981, 1988, 2000, 2004, 2007
Mar–Oct 1990 8-Month	65.2°F (18.4°C)	63.6°F (17.6°C)	1.6°F (0.8°C)	107th Coolest	Coolest since: 1989	1912
	65.2°F (18.4°C)	63.6°F (17.6°C)	1.6°F (0.8°C)	22nd Warmest	Warmest since: 1988	2014, 2015, 2022
	Ties: 1926, 1936, 1987, 1988, 1994
Feb–Oct 1990 9-Month	62.7°F (17.1°C)	61.5°F (16.4°C)	1.2°F (0.7°C)	95th Coolest	Coolest since: 1989	1912
	62.7°F (17.1°C)	61.5°F (16.4°C)	1.2°F (0.7°C)	34th Warmest	Warmest since: 1988	2015
	Ties: 2006
Jan–Oct 1990 10-Month	60.7°F (15.9°C)	59.6°F (15.3°C)	1.1°F (0.6°C)	93rd Coolest	Coolest since: 1989	1911, 1912
Jan–Oct 1990 10-Month	60.7°F (15.9°C)	59.6°F (15.3°C)	1.1°F (0.6°C)	36th Warmest	Warmest since: 1988	2015
Dec 1989–Oct 1990 11-Month	59.3°F (15.2°C)	58.1°F (14.5°C)	1.2°F (0.7°C)	95th Coolest	Coolest since: 1989	1912
	59.3°F (15.2°C)	58.1°F (14.5°C)	1.2°F (0.7°C)	33rd Warmest	Warmest since: 1988	2015
	Ties: 1958, 1978, 2002, 2008
Nov 1989–Oct 1990 12-Month	58.6°F (14.8°C)	57.3°F (14.1°C)	1.3°F (0.7°C)	97th Coolest	Coolest since: 1989	1912
	58.6°F (14.8°C)	57.3°F (14.1°C)	1.3°F (0.7°C)	31st Warmest	Warmest since: 1988	2015
	Ties: 1926, 1988, 1994
May 1989–Oct 1990 18-Month	61.6°F (16.4°C)	60.8°F (16.0°C)	0.8°F (0.4°C)	95th Coolest	Coolest since: 1989	1912
	61.6°F (16.4°C)	60.8°F (16.0°C)	0.8°F (0.4°C)	33rd Warmest	Warmest since: 1988	2015
	Ties: 1968, 1978, 1993, 1994, 2005, 2010
Nov 1988–Oct 1990 24-Month	58.2°F (14.6°C)	57.4°F (14.1°C)	0.8°F (0.5°C)	93rd Coolest	Coolest since: 1989	1912, 1949
	58.2°F (14.6°C)	57.4°F (14.1°C)	0.8°F (0.5°C)	34th Warmest	Warmest since: 1989	2015
	Ties: 1961, 1978, 1982, 1989, 1998
Nov 1987–Oct 1990 36-Month	58.3°F (14.6°C)	57.3°F (14.1°C)	1.0°F (0.5°C)	95th Coolest	Coolest since: 1987	1913
Nov 1987–Oct 1990 36-Month	58.3°F (14.6°C)	57.3°F (14.1°C)	1.0°F (0.5°C)	31st Warmest	Warmest since: 1989	2016
Nov 1986–Oct 1990 48-Month	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	103rd Coolest	Coolest since: 1989	1912, 1913
	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	22nd Warmest	Warmest since: 1989	2017
	Ties: 1989, 1992, 1996, 1999, 2012, 2013
Nov 1985–Oct 1990 60-Month	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	99th Coolest	Coolest since: 1989	1913
	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	25th Warmest	Warmest to Date	2018
	Ties: 1994, 2001, 2011

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on November 28, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings