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 1920

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1920
1-Month
35.1°F
(1.7°C)
41.7°F
(5.4°C)
-6.6°F
(-3.7°C)
1st Coolest
Coolest since:
1920
128th Warmest
Warmest since:
1992
Mar–Apr 1920
2-Month
32.6°F
(0.3°C)
37.3°F
(2.9°C)
-4.7°F
(-2.6°C)
2nd Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934, 1992
Feb–Apr 1920
3-Month
30.8°F
(-0.7°C)
33.4°F
(0.8°C)
-2.6°F
(-1.5°C)
17th Coolest
Coolest since:
1903
112th Warmest
Warmest since:
1934
Ties: 1937
Jan–Apr 1920
4-Month
28.3°F
(-2.1°C)
30.3°F
(-0.9°C)
-2.0°F
(-1.2°C)
23rd Coolest
Coolest since:
1917
106th Warmest
Warmest since:
1934
Ties: 1919, 1975
Dec 1919–Apr 1920
5-Month
26.1°F
(-3.3°C)
28.9°F
(-1.7°C)
-2.8°F
(-1.6°C)
17th Coolest
Coolest since:
1917
111th Warmest
Warmest since:
1934
Nov 1919–Apr 1920
6-Month
26.7°F
(-2.9°C)
29.4°F
(-1.4°C)
-2.7°F
(-1.5°C)
13th Coolest
Coolest since:
1917
115th Warmest
Warmest since:
1934
Ties: 1896, 1898, 1955
Oct 1919–Apr 1920
7-Month
28.5°F
(-1.9°C)
31.6°F
(-0.2°C)
-3.1°F
(-1.7°C)
7th Coolest
Coolest since:
1917
121st Warmest
Warmest since:
1934
Sep 1919–Apr 1920
8-Month
32.2°F
(0.1°C)
34.7°F
(1.5°C)
-2.5°F
(-1.4°C)
9th Coolest
Coolest since:
1917
119th Warmest
Warmest since:
1934
Ties: 1937
Aug 1919–Apr 1920
9-Month
35.9°F
(2.2°C)
38.1°F
(3.4°C)
-2.2°F
(-1.2°C)
11th Coolest
Coolest since:
1917
117th Warmest
Warmest since:
1934
Ties: 1979
Jul 1919–Apr 1920
10-Month
39.2°F
(4.0°C)
41.0°F
(5.0°C)
-1.8°F
(-1.0°C)
14th Coolest
Coolest since:
1917
114th Warmest
Warmest since:
1934
Ties: 1897
Jun 1919–Apr 1920
11-Month
41.2°F
(5.1°C)
42.7°F
(5.9°C)
-1.5°F
(-0.8°C)
15th Coolest
Coolest since:
1917
113th Warmest
Warmest since:
1934
Ties: 1949
May 1919–Apr 1920
12-Month
42.2°F
(5.7°C)
43.4°F
(6.3°C)
-1.2°F
(-0.6°C)
17th Coolest
Coolest since:
1917
111th Warmest
Warmest since:
1934, 2015, 2018
Ties: 1898, 1984
Nov 1918–Apr 1920
18-Month
37.2°F
(2.9°C)
38.8°F
(3.8°C)
-1.6°F
(-0.9°C)
11th Coolest
Coolest since:
1913
116th Warmest
Warmest since:
2018
Ties: 1914, 1930, 1949
May 1918–Apr 1920
24-Month
42.3°F
(5.7°C)
43.4°F
(6.3°C)
-1.1°F
(-0.6°C)
15th Coolest
Coolest since:
1913
112th Warmest
Warmest since:
2018
Ties: 1900, 1925
May 1917–Apr 1920
36-Month
42.6°F
(5.9°C)
43.4°F
(6.3°C)
-0.8°F
(-0.4°C)
18th Coolest
Coolest since:
1914
108th Warmest
Warmest since:
2017, 2018, 2019
Ties: 1922, 1924, 1925, 1932, 1974
May 1916–Apr 1920
48-Month
41.9°F
(5.5°C)
43.4°F
(6.3°C)
-1.5°F
(-0.8°C)
3rd Coolest
Coolest since:
1899, 1915
122nd Warmest
Warmest since:
2018
Ties: 1917
May 1915–Apr 1920
60-Month
42.0°F
(5.6°C)
43.4°F
(6.3°C)
-1.4°F
(-0.7°C)
2nd Coolest
Coolest since:
1917
122nd Warmest
Warmest since:
2018, 2019
Ties: 1900, 1916, 1933

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