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 1999

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 1999 1-Month	50.4°F (10.2°C)	51.8°F (11.0°C)	-1.4°F (-0.8°C)	35th Coolest	Coolest since: 1995	1917
May 1999 1-Month	50.4°F (10.2°C)	51.8°F (11.0°C)	-1.4°F (-0.8°C)	94th Warmest	Warmest since: 1998	1934
Apr–May 1999 2-Month	45.2°F (7.3°C)	47.1°F (8.4°C)	-1.9°F (-1.1°C)	19th Coolest	Coolest since: 1995	1917
	45.2°F (7.3°C)	47.1°F (8.4°C)	-1.9°F (-1.1°C)	110th Warmest	Warmest since: 1998	1934
	Ties: 1912, 1944
Mar–May 1999 3-Month	43.3°F (6.3°C)	42.7°F (5.9°C)	0.6°F (0.4°C)	77th Coolest	Coolest since: 1998	1917
	43.3°F (6.3°C)	42.7°F (5.9°C)	0.6°F (0.4°C)	52nd Warmest	Warmest since: 1996	2012
	Ties: 1921, 2011
Feb–May 1999 4-Month	40.8°F (4.9°C)	38.9°F (3.8°C)	1.9°F (1.1°C)	105th Coolest	Coolest since: 1998	1917
	40.8°F (4.9°C)	38.9°F (3.8°C)	1.9°F (1.1°C)	24th Warmest	Warmest since: 1996	1934
	Ties: 1994, 2005
Jan–May 1999 5-Month	38.6°F (3.7°C)	35.9°F (2.2°C)	2.7°F (1.5°C)	113th Coolest	Coolest since: 1998	1917
Jan–May 1999 5-Month	38.6°F (3.7°C)	35.9°F (2.2°C)	2.7°F (1.5°C)	16th Warmest	Warmest since: 1992	1934
Dec 1998–May 1999 6-Month	36.6°F (2.6°C)	34.1°F (1.2°C)	2.5°F (1.4°C)	112th Coolest	Coolest since: 1998	1917
	36.6°F (2.6°C)	34.1°F (1.2°C)	2.5°F (1.4°C)	16th Warmest	Warmest since: 1992	1934
	Ties: 2009, 2020
Nov 1998–May 1999 7-Month	36.7°F (2.6°C)	34.0°F (1.1°C)	2.7°F (1.5°C)	117th Coolest	Coolest since: 1998	1917
	36.7°F (2.6°C)	34.0°F (1.1°C)	2.7°F (1.5°C)	11th Warmest	Warmest since: 1981	1934
	Ties: 2022
Oct 1998–May 1999 8-Month	38.0°F (3.3°C)	35.6°F (2.0°C)	2.4°F (1.3°C)	116th Coolest	Coolest since: 1998	1917
	38.0°F (3.3°C)	35.6°F (2.0°C)	2.4°F (1.3°C)	12th Warmest	Warmest since: 1981	1934
	Ties: 2022
Sep 1998–May 1999 9-Month	40.7°F (4.8°C)	38.0°F (3.3°C)	2.7°F (1.5°C)	118th Coolest	Coolest since: 1998	1917
Sep 1998–May 1999 9-Month	40.7°F (4.8°C)	38.0°F (3.3°C)	2.7°F (1.5°C)	10th Warmest	Warmest since: 1981	1934
Aug 1998–May 1999 10-Month	43.3°F (6.3°C)	40.7°F (4.8°C)	2.6°F (1.5°C)	120th Coolest	Coolest since: 1998	1917
Aug 1998–May 1999 10-Month	43.3°F (6.3°C)	40.7°F (4.8°C)	2.6°F (1.5°C)	8th Warmest	Warmest since: 1981	1934
Jul 1998–May 1999 11-Month	45.6°F (7.6°C)	43.1°F (6.2°C)	2.5°F (1.4°C)	118th Coolest	Coolest since: 1998	1917
Jul 1998–May 1999 11-Month	45.6°F (7.6°C)	43.1°F (6.2°C)	2.5°F (1.4°C)	10th Warmest	Warmest since: 1981	1934
Jun 1998–May 1999 12-Month	46.8°F (8.2°C)	44.6°F (7.0°C)	2.2°F (1.2°C)	116th Coolest	Coolest since: 1998	1917
	46.8°F (8.2°C)	44.6°F (7.0°C)	2.2°F (1.2°C)	12th Warmest	Warmest since: 1981	1934
	Ties: 1954, 2003
Dec 1997–May 1999 18-Month	42.9°F (6.1°C)	41.1°F (5.1°C)	1.8°F (1.0°C)	111th Coolest	Coolest since: 1998	1913
	42.9°F (6.1°C)	41.1°F (5.1°C)	1.8°F (1.0°C)	16th Warmest	Warmest since: 1982	2018
	Ties: 2003, 2005, 2015
Jun 1997–May 1999 24-Month	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F (0.8°C)	107th Coolest	Coolest since: 1998	1913
	46.0°F (7.8°C)	44.6°F (7.0°C)	1.4°F (0.8°C)	20th Warmest	Warmest since: 1996	2018
	Ties: 1996, 2009, 2014, 2020
Jun 1996–May 1999 36-Month	45.8°F (7.7°C)	44.6°F (7.0°C)	1.2°F (0.7°C)	104th Coolest	Coolest since: 1998	1914
	45.8°F (7.7°C)	44.6°F (7.0°C)	1.2°F (0.7°C)	22nd Warmest	Warmest since: 1936	2018
	Ties: 2009, 2012
Jun 1995–May 1999 48-Month	45.8°F (7.7°C)	44.5°F (6.9°C)	1.3°F (0.8°C)	102nd Coolest	Coolest since: 1998	1915
Jun 1995–May 1999 48-Month	45.8°F (7.7°C)	44.5°F (6.9°C)	1.3°F (0.8°C)	23rd Warmest	Warmest since: 1937	2018
Jun 1994–May 1999 60-Month	45.9°F (7.7°C)	44.6°F (7.0°C)	1.3°F (0.7°C)	104th Coolest	Coolest since: 1998	1917
	45.9°F (7.7°C)	44.6°F (7.0°C)	1.3°F (0.7°C)	20th Warmest	Warmest since: 1938	2018
	Ties: 1938, 2012, 2014

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published February 2023, retrieved on February 9, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings