Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. 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 2013

View Period (Months):
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  • Record Coolest
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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 2013
1-Month
40.4°F
(4.7°C)
41.7°F
(5.4°C)
-1.3°F
(-0.7°C)
36th Coolest
Coolest since:
1920
93rd Warmest
Warmest since:
1992
Ties: 1967, 1995, 1998, 2011
Mar–Apr 2013
2-Month
38.1°F
(3.4°C)
37.2°F
(2.9°C)
0.9°F
(0.5°C)
71st Coolest
Coolest since:
1917
58th Warmest
Warmest since:
1934, 1992
Feb–Apr 2013
3-Month
33.4°F
(0.8°C)
33.4°F
(0.8°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1903
74th Warmest
Warmest since:
1934
Ties: 1902, 1905, 1980, 1983
Jan–Apr 2013
4-Month
29.6°F
(-1.3°C)
30.3°F
(-0.9°C)
-0.7°F
(-0.4°C)
37th Coolest
Coolest since:
1917
92nd Warmest
Warmest since:
1934
Ties: 1896, 1962, 1965
Dec 2012–Apr 2013
5-Month
28.4°F
(-2.0°C)
28.8°F
(-1.8°C)
-0.4°F
(-0.2°C)
48th Coolest
Coolest since:
1917
80th Warmest
Warmest since:
1934
Nov 2012–Apr 2013
6-Month
30.0°F
(-1.1°C)
29.4°F
(-1.4°C)
0.6°F
(0.3°C)
70th Coolest
Coolest since:
1917
58th Warmest
Warmest since:
1934
Ties: 1904, 1905, 1928, 1945, 1970, 1983
Oct 2012–Apr 2013
7-Month
32.4°F
(0.2°C)
31.7°F
(-0.2°C)
0.7°F
(0.4°C)
79th Coolest
Coolest since:
1917
49th Warmest
Warmest since:
1934
Ties: 1927, 1977, 1982
Sep 2012–Apr 2013
8-Month
35.8°F
(2.1°C)
34.8°F
(1.6°C)
1.0°F
(0.5°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
1934
Ties: 1918, 1967, 1982, 1998, 2001
Aug 2012–Apr 2013
9-Month
39.4°F
(4.1°C)
38.1°F
(3.4°C)
1.3°F
(0.7°C)
94th Coolest
Coolest since:
1917
34th Warmest
Warmest since:
1934
Ties: 1989, 2001, 2007
Jul 2012–Apr 2013
10-Month
42.4°F
(5.8°C)
40.9°F
(4.9°C)
1.5°F
(0.9°C)
92nd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
1934
Ties: 1989, 2019
Jun 2012–Apr 2013
11-Month
44.6°F
(7.0°C)
42.7°F
(5.9°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1917
19th Warmest
Warmest since:
1934
Ties: 1990, 1996, 2002
May 2012–Apr 2013
12-Month
45.4°F
(7.4°C)
43.4°F
(6.3°C)
2.0°F
(1.1°C)
111th Coolest
Coolest since:
1917
17th Warmest
Warmest since:
1934, 2015, 2018
Ties: 2007, 2014, 2019
Nov 2011–Apr 2013
18-Month
41.2°F
(5.1°C)
38.7°F
(3.7°C)
2.5°F
(1.4°C)
115th Coolest
Coolest since:
1913
12th Warmest
Warmest since:
2018
May 2011–Apr 2013
24-Month
45.5°F
(7.5°C)
43.5°F
(6.4°C)
2.0°F
(1.1°C)
114th Coolest
Coolest since:
1913
13th Warmest
Warmest since:
2018
May 2010–Apr 2013
36-Month
45.1°F
(7.3°C)
43.4°F
(6.3°C)
1.7°F
(1.0°C)
107th Coolest
Coolest since:
1914
19th Warmest
Warmest since:
2017, 2018, 2019
Ties: 1997, 2009
May 2009–Apr 2013
48-Month
44.8°F
(7.1°C)
43.4°F
(6.3°C)
1.4°F
(0.8°C)
104th Coolest
Coolest since:
1899, 1915
21st Warmest
Warmest since:
2018
Ties: 1992, 1997, 1999
May 2008–Apr 2013
60-Month
44.9°F
(7.2°C)
43.4°F
(6.3°C)
1.5°F
(0.9°C)
104th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2018, 2019
Ties: 2014

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