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, April 2010

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
April 2010
1-Month		42.0°F
(5.6°C)		41.7°F
(5.4°C)		0.3°F
(0.2°C)		63rd Coolest
Coolest since:
1920
67th Warmest
Warmest since:
1992
Mar–Apr 2010
2-Month		38.2°F
(3.4°C)		37.3°F
(2.9°C)		0.9°F
(0.5°C)		75th Coolest
Coolest since:
1917
55th Warmest
Warmest since:
1934, 1992
Ties: 1914, 1995
Feb–Apr 2010
3-Month		33.5°F
(0.8°C)		33.4°F
(0.8°C)		0.1°F
(0.0°C)		61st Coolest
Coolest since:
1903
69th Warmest
Warmest since:
1934
Ties: 1935
Jan–Apr 2010
4-Month		30.9°F
(-0.6°C)		30.3°F
(-0.9°C)		0.6°F
(0.3°C)		70th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
1934
Ties: 1931, 1936, 1945
Dec 2009–Apr 2010
5-Month		28.3°F
(-2.1°C)		28.8°F
(-1.8°C)		-0.5°F
(-0.3°C)		46th Coolest
Coolest since:
1917
83rd Warmest
Warmest since:
1934
Ties: 1969, 1988
Nov 2009–Apr 2010
6-Month		29.6°F
(-1.3°C)		29.4°F
(-1.4°C)		0.2°F
(0.1°C)		57th Coolest
Coolest since:
1917
72nd Warmest
Warmest since:
1934
Ties: 1976
Oct 2009–Apr 2010
7-Month		31.3°F
(-0.4°C)		31.7°F
(-0.2°C)		-0.4°F
(-0.2°C)		47th Coolest
Coolest since:
1917
82nd Warmest
Warmest since:
1934
Ties: 1970
Sep 2009–Apr 2010
8-Month		34.8°F
(1.6°C)		34.8°F
(1.6°C)		0.0°F
(0.0°C)		57th Coolest
Coolest since:
1917
72nd Warmest
Warmest since:
1934
Ties: 1904, 1970, 1972, 1983
Aug 2009–Apr 2010
9-Month		38.2°F
(3.4°C)		38.1°F
(3.4°C)		0.1°F
(0.0°C)		59th Coolest
Coolest since:
1917
70th Warmest
Warmest since:
1934
Ties: 1905, 1926, 1988, 1993
Jul 2009–Apr 2010
10-Month		41.2°F
(5.1°C)		41.0°F
(5.0°C)		0.2°F
(0.1°C)		63rd Coolest
Coolest since:
1917
66th Warmest
Warmest since:
1934
Ties: 1927, 1983, 1994
Jun 2009–Apr 2010
11-Month		42.7°F
(5.9°C)		42.7°F
(5.9°C)		0.0°F
(0.0°C)		56th Coolest
Coolest since:
1917
73rd Warmest
Warmest since:
1934
Ties: 1926, 1946, 1957, 1971
May 2009–Apr 2010
12-Month		43.7°F
(6.5°C)		43.4°F
(6.3°C)		0.3°F
(0.2°C)		69th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
1934, 2015, 2018
Ties: 1926, 1936, 1945, 1957, 1988, 1993
Nov 2008–Apr 2010
18-Month		39.9°F
(4.4°C)		38.7°F
(3.7°C)		1.2°F
(0.7°C)		95th Coolest
Coolest since:
1913
33rd Warmest
Warmest since:
2018
Ties: 1954, 1991
May 2008–Apr 2010
24-Month		44.5°F
(6.9°C)		43.4°F
(6.3°C)		1.1°F
(0.6°C)		93rd Coolest
Coolest since:
1913
35th Warmest
Warmest since:
2018
Ties: 1991, 1998
May 2007–Apr 2010
36-Month		44.5°F
(6.9°C)		43.4°F
(6.3°C)		1.1°F
(0.6°C)		95th Coolest
Coolest since:
1914
32nd Warmest
Warmest since:
2017, 2018, 2019
Ties: 1961, 2011, 2012
May 2006–Apr 2010
48-Month		44.7°F
(7.1°C)		43.4°F
(6.3°C)		1.3°F
(0.8°C)		100th Coolest
Coolest since:
1899, 1915
26th Warmest
Warmest since:
2018
Ties: 2012
May 2005–Apr 2010
60-Month		44.8°F
(7.1°C)		43.4°F
(6.3°C)		1.4°F
(0.8°C)		102nd Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
2018, 2019

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