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 1989

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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1989
1-Month
47.2°F
(8.4°C)
41.7°F
(5.4°C)
5.5°F
(3.0°C)
126th Coolest
Coolest since:
1920
3rd Warmest
Warmest since:
1992
Mar–Apr 1989
2-Month
42.8°F
(6.0°C)
37.2°F
(2.9°C)
5.6°F
(3.1°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
1934, 1992
Ties: 1910, 2004
Feb–Apr 1989
3-Month
35.8°F
(2.1°C)
33.3°F
(0.7°C)
2.5°F
(1.4°C)
104th Coolest
Coolest since:
1903
25th Warmest
Warmest since:
1934
Ties: 1978, 1996
Jan–Apr 1989
4-Month
31.6°F
(-0.2°C)
30.3°F
(-0.9°C)
1.3°F
(0.7°C)
89th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
1934
Ties: 1926, 1961, 1967, 1983, 2022
Dec 1988–Apr 1989
5-Month
29.8°F
(-1.2°C)
28.8°F
(-1.8°C)
1.0°F
(0.6°C)
81st Coolest
Coolest since:
1917
47th Warmest
Warmest since:
1934
Ties: 1961, 1980, 2011
Nov 1988–Apr 1989
6-Month
30.2°F
(-1.0°C)
29.4°F
(-1.4°C)
0.8°F
(0.4°C)
76th Coolest
Coolest since:
1917
52nd Warmest
Warmest since:
1934
Ties: 1950, 1956, 1971
Oct 1988–Apr 1989
7-Month
33.2°F
(0.7°C)
31.7°F
(-0.2°C)
1.5°F
(0.9°C)
95th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
1934
Sep 1988–Apr 1989
8-Month
36.0°F
(2.2°C)
34.8°F
(1.6°C)
1.2°F
(0.6°C)
92nd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
1934
Ties: 1935, 2020
Aug 1988–Apr 1989
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: 2001, 2007, 2013
Jul 1988–Apr 1989
10-Month
42.4°F
(5.8°C)
41.0°F
(5.0°C)
1.4°F
(0.8°C)
92nd Coolest
Coolest since:
1917
36th Warmest
Warmest since:
1934
Ties: 2013, 2019
Jun 1988–Apr 1989
11-Month
44.5°F
(6.9°C)
42.8°F
(6.0°C)
1.7°F
(0.9°C)
105th Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
1934
Ties: 1940, 1959, 1986, 2005, 2007, 2019
May 1988–Apr 1989
12-Month
45.1°F
(7.3°C)
43.5°F
(6.4°C)
1.6°F
(0.9°C)
98th Coolest
Coolest since:
1917
30th Warmest
Warmest since:
1934, 2015, 2018
Ties: 2006
Nov 1987–Apr 1989
18-Month
39.7°F
(4.3°C)
38.7°F
(3.7°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Ties: 1934, 1998
May 1987–Apr 1989
24-Month
44.4°F
(6.9°C)
43.4°F
(6.3°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Ties: 1936, 1960
May 1986–Apr 1989
36-Month
44.3°F
(6.8°C)
43.4°F
(6.3°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1914
37th Warmest
Warmest since:
2017, 2018, 2019
Ties: 1940, 1988
May 1985–Apr 1989
48-Month
44.5°F
(6.9°C)
43.4°F
(6.3°C)
1.1°F
(0.6°C)
97th Coolest
Coolest since:
1899, 1915
28th Warmest
Warmest since:
2018
Ties: 1983, 1990, 1991, 1995, 1996, 2011
May 1984–Apr 1989
60-Month
44.2°F
(6.8°C)
43.3°F
(6.3°C)
0.9°F
(0.5°C)
87th Coolest
Coolest since:
1917
37th Warmest
Warmest since:
2018, 2019

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