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.

Colorado

Average Temperature Rankings, September 1978

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1978 1-Month	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	76th Coolest	Coolest since: 1976	1912
	58.4°F (14.7°C)	57.3°F (14.1°C)	1.1°F (0.6°C)	53rd Warmest	Warmest since: 1977	2019
	Ties: 1905, 2002
Aug–Sep 1978 2-Month	61.3°F (16.3°C)	61.3°F (16.3°C)	0.0°F (0.0°C)	57th Coolest	Coolest since: 1976	1912
Aug–Sep 1978 2-Month	61.3°F (16.3°C)	61.3°F (16.3°C)	0.0°F (0.0°C)	72nd Warmest	Warmest since: 1977	2019
Jul–Sep 1978 3-Month	63.7°F (17.6°C)	63.2°F (17.3°C)	0.5°F (0.3°C)	73rd Coolest	Coolest since: 1976	1912
	63.7°F (17.6°C)	63.2°F (17.3°C)	0.5°F (0.3°C)	56th Warmest	Warmest since: 1977	2022
	Ties: 1958, 1979, 1982, 1984, 1988
Jun–Sep 1978 4-Month	63.4°F (17.4°C)	62.8°F (17.1°C)	0.6°F (0.3°C)	80th Coolest	Coolest since: 1976	1912
	63.4°F (17.4°C)	62.8°F (17.1°C)	0.6°F (0.3°C)	49th Warmest	Warmest since: 1977	2012, 2021
	Ties: 1901, 1938, 1943, 1948, 2008
May–Sep 1978 5-Month	60.7°F (15.9°C)	60.6°F (15.9°C)	0.1°F (0.0°C)	56th Coolest	Coolest since: 1976	1915
	60.7°F (15.9°C)	60.6°F (15.9°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1977	2018
	Ties: 1914, 1946, 1970, 1985, 1987, 2009
Apr–Sep 1978 6-Month	58.0°F (14.4°C)	57.5°F (14.2°C)	0.5°F (0.2°C)	74th Coolest	Coolest since: 1976	1912
	58.0°F (14.4°C)	57.5°F (14.2°C)	0.5°F (0.2°C)	55th Warmest	Warmest since: 1977	2012
	Ties: 1922, 1932, 1933
Mar–Sep 1978 7-Month	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	88th Coolest	Coolest since: 1976	1912
	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	41st Warmest	Warmest since: 1977	2012
	Ties: 1956, 1966
Feb–Sep 1978 8-Month	51.3°F (10.7°C)	50.8°F (10.4°C)	0.5°F (0.3°C)	80th Coolest	Coolest since: 1976	1912
	51.3°F (10.7°C)	50.8°F (10.4°C)	0.5°F (0.3°C)	49th Warmest	Warmest since: 1977	2012
	Ties: 1911, 1997
Jan–Sep 1978 9-Month	48.2°F (9.0°C)	47.7°F (8.7°C)	0.5°F (0.3°C)	71st Coolest	Coolest since: 1976	1912
	48.2°F (9.0°C)	47.7°F (8.7°C)	0.5°F (0.3°C)	58th Warmest	Warmest since: 1977	2012
	Ties: 1958, 1976
Dec 1977–Sep 1978 10-Month	46.4°F (8.0°C)	45.5°F (7.5°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1976	1912
	46.4°F (8.0°C)	45.5°F (7.5°C)	0.9°F (0.5°C)	42nd Warmest	Warmest since: 1977	1934
	Ties: 1938, 1995, 2013
Nov 1977–Sep 1978 11-Month	45.4°F (7.4°C)	44.5°F (6.9°C)	0.9°F (0.5°C)	91st Coolest	Coolest since: 1976	1912
	45.4°F (7.4°C)	44.5°F (6.9°C)	0.9°F (0.5°C)	37th Warmest	Warmest since: 1977	2018
	Ties: 1907, 1946, 1972
Oct 1977–Sep 1978 12-Month	45.6°F (7.6°C)	44.6°F (7.0°C)	1.0°F (0.6°C)	95th Coolest	Coolest since: 1977	1912
	45.6°F (7.6°C)	44.6°F (7.0°C)	1.0°F (0.6°C)	33rd Warmest	Warmest since: 1963	1934, 2000
	Ties: 1946, 1989, 1992, 1998
Apr 1977–Sep 1978 18-Month	50.3°F (10.2°C)	48.9°F (9.4°C)	1.4°F (0.8°C)	104th Coolest	Coolest since: 1977	1917
	50.3°F (10.2°C)	48.9°F (9.4°C)	1.4°F (0.8°C)	24th Warmest	Warmest since: 1954	2018
	Ties: 1999, 2005
Oct 1976–Sep 1978 24-Month	45.5°F (7.5°C)	44.6°F (7.0°C)	0.9°F (0.5°C)	94th Coolest	Coolest since: 1977	1913
	45.5°F (7.5°C)	44.6°F (7.0°C)	0.9°F (0.5°C)	33rd Warmest	Warmest since: 1955	2018
	Ties: 1987, 1991, 2009, 2011
Oct 1975–Sep 1978 36-Month	45.3°F (7.4°C)	44.5°F (6.9°C)	0.8°F (0.5°C)	87th Coolest	Coolest since: 1977	1914
	45.3°F (7.4°C)	44.5°F (6.9°C)	0.8°F (0.5°C)	39th Warmest	Warmest since: 1956	2018
	Ties: 1988, 2010
Oct 1974–Sep 1978 48-Month	44.9°F (7.2°C)	44.6°F (7.0°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 1977	1915
	44.9°F (7.2°C)	44.6°F (7.0°C)	0.3°F (0.2°C)	53rd Warmest	Warmest since: 1959	2018
	Ties: 1959
Oct 1973–Sep 1978 60-Month	44.8°F (7.1°C)	44.5°F (6.9°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 1977	1916
	44.8°F (7.1°C)	44.5°F (6.9°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 1967	2018
	Ties: 1911, 1944, 1959, 1960, 1963, 1980

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings