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 1915

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1915
1-Month
46.2°F
(7.9°C)
41.7°F
(5.4°C)
4.5°F
(2.5°C)
118th Coolest
Coolest since:
1920
11th Warmest
Warmest to Date
1992
Mar–Apr 1915
2-Month
39.2°F
(4.0°C)
37.2°F
(2.9°C)
2.0°F
(1.1°C)
99th Coolest
Coolest since:
1917
30th Warmest
Warmest since:
1934, 1992
Ties: 2019, 2021
Feb–Apr 1915
3-Month
34.6°F
(1.4°C)
33.3°F
(0.7°C)
1.3°F
(0.7°C)
85th Coolest
Coolest since:
1903
44th Warmest
Warmest since:
1934
Ties: 1961
Jan–Apr 1915
4-Month
30.2°F
(-1.0°C)
30.3°F
(-0.9°C)
-0.1°F
(-0.1°C)
50th Coolest
Coolest since:
1917
79th Warmest
Warmest since:
1934
Ties: 1930, 1963, 1991
Dec 1914–Apr 1915
5-Month
27.7°F
(-2.4°C)
28.8°F
(-1.8°C)
-1.1°F
(-0.6°C)
37th Coolest
Coolest since:
1917
91st Warmest
Warmest since:
1934
Ties: 1923
Nov 1914–Apr 1915
6-Month
28.8°F
(-1.8°C)
29.4°F
(-1.4°C)
-0.6°F
(-0.4°C)
44th Coolest
Coolest since:
1917
84th Warmest
Warmest since:
1934
Oct 1914–Apr 1915
7-Month
31.2°F
(-0.4°C)
31.7°F
(-0.2°C)
-0.5°F
(-0.2°C)
42nd Coolest
Coolest since:
1917
86th Warmest
Warmest since:
1934
Ties: 1957, 1965, 2008
Sep 1914–Apr 1915
8-Month
34.4°F
(1.3°C)
34.8°F
(1.6°C)
-0.4°F
(-0.3°C)
42nd Coolest
Coolest since:
1917
86th Warmest
Warmest since:
1934
Ties: 1930, 1960, 1971
Aug 1914–Apr 1915
9-Month
37.7°F
(3.2°C)
38.1°F
(3.4°C)
-0.4°F
(-0.2°C)
42nd Coolest
Coolest since:
1917
86th Warmest
Warmest since:
1934
Ties: 1968
Jul 1914–Apr 1915
10-Month
40.4°F
(4.7°C)
40.9°F
(4.9°C)
-0.5°F
(-0.2°C)
35th Coolest
Coolest since:
1917
93rd Warmest
Warmest since:
1934
Ties: 1985
Jun 1914–Apr 1915
11-Month
42.1°F
(5.6°C)
42.7°F
(5.9°C)
-0.6°F
(-0.3°C)
36th Coolest
Coolest since:
1917
92nd Warmest
Warmest since:
1934
Ties: 1985
May 1914–Apr 1915
12-Month
43.0°F
(6.1°C)
43.4°F
(6.3°C)
-0.4°F
(-0.2°C)
43rd Coolest
Coolest since:
1917
85th Warmest
Warmest since:
1934, 2015, 2018
Ties: 1900, 1921, 1965
Nov 1913–Apr 1915
18-Month
38.3°F
(3.5°C)
38.7°F
(3.7°C)
-0.4°F
(-0.2°C)
41st Coolest
Coolest since:
1913
86th Warmest
Warmest since:
2018
Ties: 1937, 1956, 1975
May 1913–Apr 1915
24-Month
42.8°F
(6.0°C)
43.4°F
(6.3°C)
-0.6°F
(-0.3°C)
31st Coolest
Coolest since:
1913
96th Warmest
Warmest since:
2018
Ties: 1919, 1950, 1980, 1984
May 1912–Apr 1915
36-Month
42.0°F
(5.6°C)
43.4°F
(6.3°C)
-1.4°F
(-0.7°C)
7th Coolest
Coolest since:
1914
119th Warmest
Warmest since:
2017, 2018, 2019
Ties: 1899, 1910
May 1911–Apr 1915
48-Month
41.8°F
(5.4°C)
43.4°F
(6.3°C)
-1.6°F
(-0.9°C)
1st Coolest
Coolest since:
1899, 1915
124th Warmest
Warmest since:
2018
Ties: 1899
May 1910–Apr 1915
60-Month
42.5°F
(5.8°C)
43.4°F
(6.3°C)
-0.9°F
(-0.5°C)
12th Coolest
Coolest since:
1917
112th Warmest
Warmest since:
2018, 2019
Ties: 1910, 1912, 1932

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