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 1959

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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 1959
1-Month
42.6°F
(5.9°C)
41.7°F
(5.4°C)
0.9°F
(0.5°C)
75th Coolest
Coolest since:
1920
54th Warmest
Warmest since:
1992
Mar–Apr 1959
2-Month
37.4°F
(3.0°C)
37.2°F
(2.9°C)
0.2°F
(0.1°C)
59th Coolest
Coolest since:
1917
70th Warmest
Warmest since:
1934, 1992
Ties: 1918, 1928
Feb–Apr 1959
3-Month
33.8°F
(1.0°C)
33.4°F
(0.8°C)
0.4°F
(0.2°C)
71st Coolest
Coolest since:
1903
58th Warmest
Warmest since:
1934
Ties: 2019
Jan–Apr 1959
4-Month
31.4°F
(-0.3°C)
30.3°F
(-0.9°C)
1.1°F
(0.6°C)
81st Coolest
Coolest since:
1917
48th Warmest
Warmest since:
1934
Ties: 1935
Dec 1958–Apr 1959
5-Month
31.1°F
(-0.5°C)
28.8°F
(-1.8°C)
2.3°F
(1.3°C)
102nd Coolest
Coolest since:
1917
26th Warmest
Warmest since:
1934
Ties: 2016, 2022
Nov 1958–Apr 1959
6-Month
31.4°F
(-0.3°C)
29.4°F
(-1.4°C)
2.0°F
(1.1°C)
101st Coolest
Coolest since:
1917
27th Warmest
Warmest since:
1934
Ties: 1938
Oct 1958–Apr 1959
7-Month
33.6°F
(0.9°C)
31.6°F
(-0.2°C)
2.0°F
(1.1°C)
99th Coolest
Coolest since:
1917
29th Warmest
Warmest since:
1934
Ties: 1938
Sep 1958–Apr 1959
8-Month
36.6°F
(2.6°C)
34.7°F
(1.5°C)
1.9°F
(1.1°C)
100th Coolest
Coolest since:
1917
28th Warmest
Warmest since:
1934
Ties: 1986
Aug 1958–Apr 1959
9-Month
40.1°F
(4.5°C)
38.1°F
(3.4°C)
2.0°F
(1.1°C)
109th Coolest
Coolest since:
1917
19th Warmest
Warmest since:
1934
Ties: 1907, 1943, 1990, 2005
Jul 1958–Apr 1959
10-Month
42.6°F
(5.9°C)
40.9°F
(4.9°C)
1.7°F
(1.0°C)
99th Coolest
Coolest since:
1917
29th Warmest
Warmest since:
1934
Ties: 1911, 2020
Jun 1958–Apr 1959
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, 1986, 1989, 2005, 2007, 2019
May 1958–Apr 1959
12-Month
45.3°F
(7.4°C)
43.4°F
(6.3°C)
1.9°F
(1.1°C)
107th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
1934, 2015, 2018
Ties: 1990, 2001, 2009
Nov 1957–Apr 1959
18-Month
40.0°F
(4.4°C)
38.8°F
(3.8°C)
1.2°F
(0.6°C)
96th Coolest
Coolest since:
1913
31st Warmest
Warmest since:
2018
May 1957–Apr 1959
24-Month
44.1°F
(6.7°C)
43.4°F
(6.3°C)
0.7°F
(0.4°C)
85th Coolest
Coolest since:
1913
42nd Warmest
Warmest since:
2018
Ties: 1986
May 1956–Apr 1959
36-Month
44.0°F
(6.7°C)
43.4°F
(6.3°C)
0.6°F
(0.4°C)
81st Coolest
Coolest since:
1914
45th Warmest
Warmest since:
2017, 2018, 2019
Ties: 1942, 1955, 1956
May 1955–Apr 1959
48-Month
44.0°F
(6.7°C)
43.4°F
(6.3°C)
0.6°F
(0.4°C)
81st Coolest
Coolest since:
1899, 1915
44th Warmest
Warmest since:
2018
Ties: 1956, 1962, 1988, 1994
May 1954–Apr 1959
60-Month
43.7°F
(6.5°C)
43.3°F
(6.3°C)
0.4°F
(0.2°C)
70th Coolest
Coolest since:
1917
54th Warmest
Warmest since:
2018, 2019
Ties: 1947, 1958, 1964, 1978, 1986, 1988

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