Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Upper Colorado River Basin

Average Temperature Rankings, January 2011

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
January 2011
1-Month		21.3°F
(-5.9°C)		21.1°F
(-6.1°C)		0.2°F
(0.2°C)		59th Coolest
Coolest since:
1937
71st Warmest
Warmest since:
2003
Ties: 1912, 1987
Dec 2010–Jan 2011
2-Month		25.2°F
(-3.8°C)		22.1°F
(-5.5°C)		3.1°F
(1.7°C)		104th Coolest
Coolest since:
1979
25th Warmest
Warmest since:
1981
Ties: 1953
Nov 2010–Jan 2011
3-Month		27.3°F
(-2.6°C)		25.4°F
(-3.7°C)		1.9°F
(1.1°C)		97th Coolest
Coolest since:
1932
32nd Warmest
Warmest since:
2018
Ties: 1923, 1966, 1970, 1971, 1998
Oct 2010–Jan 2011
4-Month		32.5°F
(0.3°C)		30.4°F
(-0.9°C)		2.1°F
(1.2°C)		103rd Coolest
Coolest since:
1917
26th Warmest
Warmest since:
2018
Ties: 1945, 1966
Sep 2010–Jan 2011
5-Month		38.0°F
(3.3°C)		35.6°F
(2.0°C)		2.4°F
(1.3°C)		112th Coolest
Coolest since:
1913
17th Warmest
Warmest since:
2018
Ties: 1940, 1954, 2005, 2006, 2021
Aug 2010–Jan 2011
6-Month		42.5°F
(5.8°C)		40.5°F
(4.7°C)		2.0°F
(1.1°C)		107th Coolest
Coolest since:
1913
22nd Warmest
Warmest since:
2018
Ties: 2004
Jul 2010–Jan 2011
7-Month		46.2°F
(7.9°C)		44.2°F
(6.8°C)		2.0°F
(1.1°C)		105th Coolest
Coolest since:
1913
24th Warmest
Warmest since:
2018
Ties: 1940
Jun 2010–Jan 2011
8-Month		48.2°F
(9.0°C)		46.3°F
(7.9°C)		1.9°F
(1.1°C)		109th Coolest
Coolest since:
1913
20th Warmest
Warmest since:
2022
Ties: 1982, 1995, 2023
May 2010–Jan 2011
9-Month		48.2°F
(9.0°C)		46.8°F
(8.2°C)		1.4°F
(0.8°C)		95th Coolest
Coolest since:
1913
34th Warmest
Warmest since:
2022
Ties: 1941
Apr 2010–Jan 2011
10-Month		47.6°F
(8.7°C)		46.3°F
(7.9°C)		1.3°F
(0.8°C)		94th Coolest
Coolest since:
1913
35th Warmest
Warmest since:
2022
Ties: 2000, 2009
Mar 2010–Jan 2011
11-Month		46.4°F
(8.0°C)		45.0°F
(7.2°C)		1.4°F
(0.8°C)		97th Coolest
Coolest since:
1913
32nd Warmest
Warmest since:
2018
Ties: 2007
Feb 2010–Jan 2011
12-Month		44.5°F
(6.9°C)		43.4°F
(6.3°C)		1.1°F
(0.6°C)		92nd Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Aug 2009–Jan 2011
18-Month		43.2°F
(6.2°C)		42.4°F
(5.8°C)		0.8°F
(0.4°C)		83rd Coolest
Coolest since:
1913
45th Warmest
Warmest since:
2018
Ties: 1936, 1989
Feb 2009–Jan 2011
24-Month		44.4°F
(6.9°C)		43.4°F
(6.3°C)		1.0°F
(0.6°C)		92nd Coolest
Coolest since:
1913, 1914
36th Warmest
Warmest since:
2018, 2019
Ties: 1983, 1988, 1995, 2012
Feb 2008–Jan 2011
36-Month		44.4°F
(6.9°C)		43.4°F
(6.3°C)		1.0°F
(0.6°C)		92nd Coolest
Coolest since:
1914
35th Warmest
Warmest since:
2018
Ties: 1961, 1992, 1993
Feb 2007–Jan 2011
48-Month		44.8°F
(7.1°C)		43.4°F
(6.3°C)		1.4°F
(0.8°C)		102nd Coolest
Coolest since:
1899
24th Warmest
Warmest since:
2018
Ties: 1997, 2010
Feb 2006–Jan 2011
60-Month		44.8°F
(7.1°C)		43.4°F
(6.3°C)		1.4°F
(0.8°C)		102nd Coolest
Coolest since:
1900, 1917
23rd Warmest
Warmest since:
2019
Ties: 1997, 2013

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