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, May 2009

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2009 1-Month	54.5°F (12.5°C)	51.8°F (11.0°C)	2.7°F (1.5°C)	110th Coolest	Coolest since: 2008	1917
	54.5°F (12.5°C)	51.8°F (11.0°C)	2.7°F (1.5°C)	19th Warmest	Warmest since: 2006	1934
	Ties: 1939
Apr–May 2009 2-Month	48.2°F (9.0°C)	47.1°F (8.4°C)	1.1°F (0.6°C)	87th Coolest	Coolest since: 2008	1917
	48.2°F (9.0°C)	47.1°F (8.4°C)	1.1°F (0.6°C)	42nd Warmest	Warmest since: 2007	1934
	Ties: 1910, 1949, 1960, 1966
Mar–May 2009 3-Month	44.5°F (6.9°C)	42.6°F (5.9°C)	1.9°F (1.0°C)	102nd Coolest	Coolest since: 2008	1917
	44.5°F (6.9°C)	42.6°F (5.9°C)	1.9°F (1.0°C)	27th Warmest	Warmest since: 2007	2012
	Ties: 1963
Feb–May 2009 4-Month	41.4°F (5.2°C)	38.8°F (3.8°C)	2.6°F (1.4°C)	116th Coolest	Coolest since: 2008	1917
	41.4°F (5.2°C)	38.8°F (3.8°C)	2.6°F (1.4°C)	13th Warmest	Warmest since: 2006	1934
	Ties: 1963, 2006
Jan–May 2009 5-Month	38.8°F (3.8°C)	35.8°F (2.1°C)	3.0°F (1.7°C)	117th Coolest	Coolest since: 2008	1917
Jan–May 2009 5-Month	38.8°F (3.8°C)	35.8°F (2.1°C)	3.0°F (1.7°C)	12th Warmest	Warmest since: 2006	1934
Dec 2008–May 2009 6-Month	36.6°F (2.6°C)	34.1°F (1.2°C)	2.5°F (1.4°C)	112th Coolest	Coolest since: 2008	1917
	36.6°F (2.6°C)	34.1°F (1.2°C)	2.5°F (1.4°C)	16th Warmest	Warmest since: 2006	1934
	Ties: 1999, 2020
Nov 2008–May 2009 7-Month	36.8°F (2.7°C)	34.0°F (1.1°C)	2.8°F (1.6°C)	120th Coolest	Coolest since: 2008	1917
	36.8°F (2.7°C)	34.0°F (1.1°C)	2.8°F (1.6°C)	8th Warmest	Warmest since: 2006	1934
	Ties: 1954, 2015
Oct 2008–May 2009 8-Month	38.2°F (3.4°C)	35.6°F (2.0°C)	2.6°F (1.4°C)	118th Coolest	Coolest since: 2008	1917
	38.2°F (3.4°C)	35.6°F (2.0°C)	2.6°F (1.4°C)	10th Warmest	Warmest since: 2006	1934
	Ties: 1954
Sep 2008–May 2009 9-Month	40.3°F (4.6°C)	38.0°F (3.3°C)	2.3°F (1.3°C)	114th Coolest	Coolest since: 2008	1917
Sep 2008–May 2009 9-Month	40.3°F (4.6°C)	38.0°F (3.3°C)	2.3°F (1.3°C)	14th Warmest	Warmest since: 2006	1934
Aug 2008–May 2009 10-Month	42.8°F (6.0°C)	40.7°F (4.8°C)	2.1°F (1.2°C)	114th Coolest	Coolest since: 2008	1917
	42.8°F (6.0°C)	40.7°F (4.8°C)	2.1°F (1.2°C)	14th Warmest	Warmest since: 2006	1934
	Ties: 1996
Jul 2008–May 2009 11-Month	45.2°F (7.3°C)	43.1°F (6.2°C)	2.1°F (1.1°C)	114th Coolest	Coolest since: 2008	1917
Jul 2008–May 2009 11-Month	45.2°F (7.3°C)	43.1°F (6.2°C)	2.1°F (1.1°C)	14th Warmest	Warmest since: 2006	1934
Jun 2008–May 2009 12-Month	46.6°F (8.1°C)	44.6°F (7.0°C)	2.0°F (1.1°C)	113th Coolest	Coolest since: 2008	1917
	46.6°F (8.1°C)	44.6°F (7.0°C)	2.0°F (1.1°C)	15th Warmest	Warmest since: 2006	1934
	Ties: 2002, 2021
Dec 2007–May 2009 18-Month	42.0°F (5.6°C)	41.1°F (5.1°C)	0.9°F (0.5°C)	92nd Coolest	Coolest since: 2008	1913
	42.0°F (5.6°C)	41.1°F (5.1°C)	0.9°F (0.5°C)	35th Warmest	Warmest since: 2008	2018
	Ties: 1990, 1991, 2008
Jun 2007–May 2009 24-Month	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F (0.8°C)	107th Coolest	Coolest since: 2008	1913
	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F (0.8°C)	20th Warmest	Warmest since: 2007	2018
	Ties: 1996, 1999, 2014, 2020
Jun 2006–May 2009 36-Month	45.8°F (7.7°C)	44.5°F (6.9°C)	1.3°F (0.8°C)	104th Coolest	Coolest since: 1999	1914
	45.8°F (7.7°C)	44.5°F (6.9°C)	1.3°F (0.8°C)	22nd Warmest	Warmest since: 2008	2018
	Ties: 1999, 2012
Jun 2005–May 2009 48-Month	46.1°F (7.8°C)	44.5°F (6.9°C)	1.6°F (0.9°C)	107th Coolest	Coolest since: 2008	1915
Jun 2005–May 2009 48-Month	46.1°F (7.8°C)	44.5°F (6.9°C)	1.6°F (0.9°C)	18th Warmest	Warmest since: 2007	2018
Jun 2004–May 2009 60-Month	46.1°F (7.8°C)	44.6°F (7.0°C)	1.5°F (0.8°C)	109th Coolest	Coolest since: 2008	1917
	46.1°F (7.8°C)	44.6°F (7.0°C)	1.5°F (0.8°C)	15th Warmest	Warmest since: 2008	2018
	Ties: 2000, 2001, 2008

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings