Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Wyoming

Average Temperature Rankings, September 1991

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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
September 1991 1-Month	54.5°F (12.5°C)	53.6°F (12.0°C)	0.9°F (0.5°C)	74th Coolest	Coolest since: 1989	1965
	54.5°F (12.5°C)	53.6°F (12.0°C)	0.9°F (0.5°C)	55th Warmest	Warmest since: 1990	1998
	Ties: 1899, 1992
Aug–Sep 1991 2-Month	60.1°F (15.6°C)	58.5°F (14.7°C)	1.6°F (0.9°C)	94th Coolest	Coolest since: 1989	1912
	60.1°F (15.6°C)	58.5°F (14.7°C)	1.6°F (0.9°C)	35th Warmest	Warmest since: 1990	2022
	Ties: 1953, 1997
Jul–Sep 1991 3-Month	61.9°F (16.6°C)	60.7°F (15.9°C)	1.2°F (0.7°C)	86th Coolest	Coolest since: 1989	1912
	61.9°F (16.6°C)	60.7°F (15.9°C)	1.2°F (0.7°C)	43rd Warmest	Warmest since: 1990	2022
	Ties: 1922, 1938, 1989, 2016
Jun–Sep 1991 4-Month	61.3°F (16.3°C)	60.0°F (15.6°C)	1.3°F (0.7°C)	96th Coolest	Coolest since: 1989	1912, 1915
	61.3°F (16.3°C)	60.0°F (15.6°C)	1.3°F (0.7°C)	33rd Warmest	Warmest since: 1990	2021
	Ties: 1938
May–Sep 1991 5-Month	58.7°F (14.8°C)	57.7°F (14.3°C)	1.0°F (0.5°C)	88th Coolest	Coolest since: 1989	1915
	58.7°F (14.8°C)	57.7°F (14.3°C)	1.0°F (0.5°C)	41st Warmest	Warmest since: 1990	2012
	Ties: 1981
Apr–Sep 1991 6-Month	55.2°F (12.9°C)	54.5°F (12.5°C)	0.7°F (0.4°C)	82nd Coolest	Coolest since: 1986	1912
	55.2°F (12.9°C)	54.5°F (12.5°C)	0.7°F (0.4°C)	47th Warmest	Warmest since: 1990	2012
	Ties: 1901, 1925, 1932, 1946, 1980, 1985
Mar–Sep 1991 7-Month	51.8°F (11.0°C)	50.9°F (10.5°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1985	1912
	51.8°F (11.0°C)	50.9°F (10.5°C)	0.9°F (0.5°C)	41st Warmest	Warmest since: 1990	2012
	Ties: 1938, 1949
Feb–Sep 1991 8-Month	49.2°F (9.6°C)	47.3°F (8.5°C)	1.9°F (1.1°C)	112th Coolest	Coolest since: 1990	1912
	49.2°F (9.6°C)	47.3°F (8.5°C)	1.9°F (1.1°C)	17th Warmest	Warmest since: 1988	2012
	Ties: 1954, 2021
Jan–Sep 1991 9-Month	45.6°F (7.6°C)	44.1°F (6.7°C)	1.5°F (0.9°C)	99th Coolest	Coolest since: 1989	1917
	45.6°F (7.6°C)	44.1°F (6.7°C)	1.5°F (0.9°C)	30th Warmest	Warmest since: 1990	2012
	Ties: 1925, 1946, 1953
Dec 1990–Sep 1991 10-Month	42.3°F (5.7°C)	41.8°F (5.4°C)	0.5°F (0.3°C)	72nd Coolest	Coolest since: 1989	1917
	42.3°F (5.7°C)	41.8°F (5.4°C)	0.5°F (0.3°C)	56th Warmest	Warmest since: 1990	1934, 2012
	Ties: 1947, 1974, 1997
Nov 1990–Sep 1991 11-Month	41.4°F (5.2°C)	40.6°F (4.8°C)	0.8°F (0.4°C)	84th Coolest	Coolest since: 1989	1917
	41.4°F (5.2°C)	40.6°F (4.8°C)	0.8°F (0.4°C)	44th Warmest	Warmest since: 1990	1934
	Ties: 1976, 2014
Oct 1990–Sep 1991 12-Month	41.5°F (5.3°C)	40.8°F (4.9°C)	0.7°F (0.4°C)	86th Coolest	Coolest since: 1989	1917
	41.5°F (5.3°C)	40.8°F (4.9°C)	0.7°F (0.4°C)	42nd Warmest	Warmest since: 1990	1934
	Ties: 1911, 1941, 1976, 1989, 1996, 2011
Apr 1990–Sep 1991 18-Month	46.3°F (7.9°C)	45.3°F (7.4°C)	1.0°F (0.5°C)	93rd Coolest	Coolest since: 1986	1917
	46.3°F (7.9°C)	45.3°F (7.4°C)	1.0°F (0.5°C)	35th Warmest	Warmest since: 1990	1934
	Ties: 1931, 1998, 2014
Oct 1989–Sep 1991 24-Month	42.0°F (5.6°C)	40.8°F (4.9°C)	1.2°F (0.7°C)	101st Coolest	Coolest since: 1990	1913, 1917
	42.0°F (5.6°C)	40.8°F (4.9°C)	1.2°F (0.7°C)	26th Warmest	Warmest since: 1990	2016
	Ties: 1989, 1990
Oct 1988–Sep 1991 36-Month	41.8°F (5.4°C)	40.7°F (4.8°C)	1.1°F (0.6°C)	95th Coolest	Coolest since: 1987	1917
	41.8°F (5.4°C)	40.7°F (4.8°C)	1.1°F (0.6°C)	31st Warmest	Warmest since: 1990	2017
	Ties: 1996, 1999, 2020, 2021
Oct 1987–Sep 1991 48-Month	42.0°F (5.6°C)	40.7°F (4.8°C)	1.3°F (0.8°C)	102nd Coolest	Coolest since: 1989	1899
	42.0°F (5.6°C)	40.7°F (4.8°C)	1.3°F (0.8°C)	23rd Warmest	Warmest since: 1990	2018
	Ties: 1941, 1992
Oct 1986–Sep 1991 60-Month	42.1°F (5.6°C)	40.7°F (4.8°C)	1.4°F (0.8°C)	104th Coolest	Coolest since: 1990	1917
	42.1°F (5.6°C)	40.7°F (4.8°C)	1.4°F (0.8°C)	20th Warmest	Warmest to Date	2016
	Ties: 1992, 2014

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings