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 1917

View Period (Months):
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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 1917
1-Month
36.9°F
(2.7°C)
41.7°F
(5.4°C)
-4.8°F
(-2.7°C)
5th Coolest
Coolest since:
1920
124th Warmest
Warmest since:
1992
Mar–Apr 1917
2-Month
30.5°F
(-0.8°C)
37.2°F
(2.9°C)
-6.7°F
(-3.7°C)
1st Coolest
Coolest since:
1917
128th Warmest
Warmest since:
1934, 1992
Feb–Apr 1917
3-Month
27.8°F
(-2.3°C)
33.4°F
(0.8°C)
-5.6°F
(-3.1°C)
2nd Coolest
Coolest since:
1903
127th Warmest
Warmest since:
1934
Jan–Apr 1917
4-Month
24.3°F
(-4.3°C)
30.3°F
(-0.9°C)
-6.0°F
(-3.4°C)
1st Coolest
Coolest since:
1917
128th Warmest
Warmest since:
1934
Dec 1916–Apr 1917
5-Month
23.2°F
(-4.9°C)
28.8°F
(-1.8°C)
-5.6°F
(-3.1°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Nov 1916–Apr 1917
6-Month
24.1°F
(-4.4°C)
29.4°F
(-1.4°C)
-5.3°F
(-3.0°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Oct 1916–Apr 1917
7-Month
26.8°F
(-2.9°C)
31.6°F
(-0.2°C)
-4.8°F
(-2.7°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Sep 1916–Apr 1917
8-Month
30.2°F
(-1.0°C)
34.7°F
(1.5°C)
-4.5°F
(-2.5°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Aug 1916–Apr 1917
9-Month
33.8°F
(1.0°C)
38.1°F
(3.4°C)
-4.3°F
(-2.4°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Jul 1916–Apr 1917
10-Month
37.0°F
(2.8°C)
41.0°F
(5.0°C)
-4.0°F
(-2.2°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
Jun 1916–Apr 1917
11-Month
38.9°F
(3.8°C)
42.7°F
(5.9°C)
-3.8°F
(-2.1°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934
May 1916–Apr 1917
12-Month
39.6°F
(4.2°C)
43.4°F
(6.3°C)
-3.8°F
(-2.1°C)
1st Coolest
Coolest since:
1917
127th Warmest
Warmest since:
1934, 2015, 2018
Nov 1915–Apr 1917
18-Month
36.2°F
(2.3°C)
38.7°F
(3.7°C)
-2.5°F
(-1.4°C)
3rd Coolest
Coolest since:
1913
124th Warmest
Warmest since:
2018
May 1915–Apr 1917
24-Month
41.1°F
(5.1°C)
43.5°F
(6.4°C)
-2.4°F
(-1.3°C)
2nd Coolest
Coolest since:
1913
125th Warmest
Warmest since:
2018
May 1914–Apr 1917
36-Month
41.7°F
(5.4°C)
43.4°F
(6.3°C)
-1.7°F
(-0.9°C)
2nd Coolest
Coolest since:
1914
124th Warmest
Warmest since:
2017, 2018, 2019
May 1913–Apr 1917
48-Month
41.9°F
(5.5°C)
43.3°F
(6.3°C)
-1.4°F
(-0.8°C)
3rd Coolest
Coolest since:
1899, 1915
122nd Warmest
Warmest since:
2018
Ties: 1920
May 1912–Apr 1917
60-Month
41.6°F
(5.3°C)
43.4°F
(6.3°C)
-1.8°F
(-1.0°C)
1st Coolest
Coolest since:
1917
123rd Warmest
Warmest since:
2018, 2019

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