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.

Great Basin

Average Temperature Rankings, September 1990

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1990 1-Month	65.0°F (18.3°C)	60.8°F (16.0°C)	4.2°F (2.3°C)	124th Coolest	Coolest since: 1989	1912
September 1990 1-Month	65.0°F (18.3°C)	60.8°F (16.0°C)	4.2°F (2.3°C)	5th Warmest	Warmest to Date	2022
Aug–Sep 1990 2-Month	67.2°F (19.6°C)	65.2°F (18.4°C)	2.0°F (1.2°C)	112th Coolest	Coolest since: 1989	1900
	67.2°F (19.6°C)	65.2°F (18.4°C)	2.0°F (1.2°C)	17th Warmest	Warmest since: 1981	2020
	Ties: 1935, 1958, 1998
Jul–Sep 1990 3-Month	69.0°F (20.6°C)	67.2°F (19.6°C)	1.8°F (1.0°C)	106th Coolest	Coolest since: 1989	1912
	69.0°F (20.6°C)	67.2°F (19.6°C)	1.8°F (1.0°C)	23rd Warmest	Warmest since: 1981	2022
	Ties: 1933, 1960, 2015
Jun–Sep 1990 4-Month	68.0°F (20.0°C)	66.2°F (19.0°C)	1.8°F (1.0°C)	104th Coolest	Coolest since: 1989	1907
Jun–Sep 1990 4-Month	68.0°F (20.0°C)	66.2°F (19.0°C)	1.8°F (1.0°C)	25th Warmest	Warmest since: 1981	2021
May–Sep 1990 5-Month	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	95th Coolest	Coolest since: 1989	1907, 1965
	65.1°F (18.4°C)	63.9°F (17.7°C)	1.2°F (0.7°C)	34th Warmest	Warmest since: 1988	2021
	Ties: 1988, 1997
Apr–Sep 1990 6-Month	62.7°F (17.1°C)	60.9°F (16.1°C)	1.8°F (1.0°C)	105th Coolest	Coolest since: 1989	1912
	62.7°F (17.1°C)	60.9°F (16.1°C)	1.8°F (1.0°C)	24th Warmest	Warmest since: 1981	2021
	Ties: 1936
Mar–Sep 1990 7-Month	59.7°F (15.4°C)	57.6°F (14.2°C)	2.1°F (1.2°C)	108th Coolest	Coolest since: 1989	1912
Mar–Sep 1990 7-Month	59.7°F (15.4°C)	57.6°F (14.2°C)	2.1°F (1.2°C)	21st Warmest	Warmest since: 1940	1934, 2007, 2021
Feb–Sep 1990 8-Month	56.0°F (13.3°C)	54.5°F (12.5°C)	1.5°F (0.8°C)	103rd Coolest	Coolest since: 1989	1903
	56.0°F (13.3°C)	54.5°F (12.5°C)	1.5°F (0.8°C)	26th Warmest	Warmest since: 1986	1934, 2015
	Ties: 1910, 2006, 2009
Jan–Sep 1990 9-Month	53.2°F (11.8°C)	51.6°F (10.9°C)	1.6°F (0.9°C)	104th Coolest	Coolest since: 1989	1917
Jan–Sep 1990 9-Month	53.2°F (11.8°C)	51.6°F (10.9°C)	1.6°F (0.9°C)	25th Warmest	Warmest since: 1986	2015
Dec 1989–Sep 1990 10-Month	51.1°F (10.6°C)	49.4°F (9.7°C)	1.7°F (0.9°C)	105th Coolest	Coolest since: 1989	1917
Dec 1989–Sep 1990 10-Month	51.1°F (10.6°C)	49.4°F (9.7°C)	1.7°F (0.9°C)	23rd Warmest	Warmest since: 1986	2015
Nov 1989–Sep 1990 11-Month	50.0°F (10.0°C)	48.3°F (9.1°C)	1.7°F (0.9°C)	107th Coolest	Coolest since: 1989	1917
	50.0°F (10.0°C)	48.3°F (9.1°C)	1.7°F (0.9°C)	21st Warmest	Warmest since: 1981	2015
	Ties: 1926, 2001
Oct 1989–Sep 1990 12-Month	50.0°F (10.0°C)	48.5°F (9.2°C)	1.5°F (0.8°C)	106th Coolest	Coolest since: 1989	1917
	50.0°F (10.0°C)	48.5°F (9.2°C)	1.5°F (0.8°C)	22nd Warmest	Warmest since: 1981	2015
	Ties: 1959, 2002, 2013
Apr 1989–Sep 1990 18-Month	54.1°F (12.3°C)	52.6°F (11.4°C)	1.5°F (0.9°C)	110th Coolest	Coolest since: 1989	1917
	54.1°F (12.3°C)	52.6°F (11.4°C)	1.5°F (0.9°C)	18th Warmest	Warmest since: 1940	2015
	Ties: 1935, 2009, 2019
Oct 1988–Sep 1990 24-Month	49.6°F (9.8°C)	48.4°F (9.1°C)	1.2°F (0.7°C)	100th Coolest	Coolest since: 1989	1913
Oct 1988–Sep 1990 24-Month	49.6°F (9.8°C)	48.4°F (9.1°C)	1.2°F (0.7°C)	27th Warmest	Warmest since: 1981	2016
Oct 1987–Sep 1990 36-Month	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	99th Coolest	Coolest since: 1989	1917
	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	27th Warmest	Warmest since: 1961	2017
	Ties: 1961, 1994
Oct 1986–Sep 1990 48-Month	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	104th Coolest	Coolest since: 1989	1915
	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	21st Warmest	Warmest since: 1937	2018
	Ties: 1937, 1992, 1999, 2012, 2013
Oct 1985–Sep 1990 60-Month	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	100th Coolest	Coolest since: 1989	1917
	49.5°F (9.7°C)	48.4°F (9.1°C)	1.1°F (0.6°C)	24th Warmest	Warmest since: 1938	2018
	Ties: 1938, 1992

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings