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 2018

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 2018
1-Month
45.1°F
(7.3°C)
41.7°F
(5.4°C)
3.4°F
(1.9°C)
110th Coolest
Coolest since:
1920
19th Warmest
Warmest since:
1992
Ties: 1977
Mar–Apr 2018
2-Month
40.6°F
(4.8°C)
37.2°F
(2.9°C)
3.4°F
(1.9°C)
112th Coolest
Coolest since:
1917
17th Warmest
Warmest since:
1934, 1992
Ties: 2001
Feb–Apr 2018
3-Month
36.6°F
(2.6°C)
33.3°F
(0.7°C)
3.3°F
(1.9°C)
113th Coolest
Coolest since:
1903
16th Warmest
Warmest since:
1934
Ties: 1990
Jan–Apr 2018
4-Month
34.6°F
(1.4°C)
30.2°F
(-1.0°C)
4.4°F
(2.4°C)
120th Coolest
Coolest since:
1917
9th Warmest
Warmest since:
1934
Dec 2017–Apr 2018
5-Month
33.6°F
(0.9°C)
28.9°F
(-1.7°C)
4.7°F
(2.6°C)
124th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
1934
Nov 2017–Apr 2018
6-Month
34.6°F
(1.4°C)
29.4°F
(-1.4°C)
5.2°F
(2.8°C)
125th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1934
Ties: 2015
Oct 2017–Apr 2018
7-Month
36.1°F
(2.3°C)
31.6°F
(-0.2°C)
4.5°F
(2.5°C)
123rd Coolest
Coolest since:
1917
5th Warmest
Warmest since:
1934
Sep 2017–Apr 2018
8-Month
38.9°F
(3.8°C)
34.8°F
(1.6°C)
4.1°F
(2.2°C)
125th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1934
Ties: 1981
Aug 2017–Apr 2018
9-Month
41.9°F
(5.5°C)
38.1°F
(3.4°C)
3.8°F
(2.1°C)
125th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1934
Jul 2017–Apr 2018
10-Month
44.7°F
(7.1°C)
40.9°F
(4.9°C)
3.8°F
(2.2°C)
125th Coolest
Coolest since:
1917
3rd Warmest
Warmest since:
1934
Jun 2017–Apr 2018
11-Month
46.6°F
(8.1°C)
42.7°F
(5.9°C)
3.9°F
(2.2°C)
126th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
1934
May 2017–Apr 2018
12-Month
47.0°F
(8.3°C)
43.4°F
(6.3°C)
3.6°F
(2.0°C)
127th Coolest
Coolest since:
1917
1st Warmest
Warmest since:
1934, 2015, 2018
Ties: 1934, 2015
Nov 2016–Apr 2018
18-Month
42.6°F
(5.9°C)
38.8°F
(3.8°C)
3.8°F
(2.1°C)
126th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2018
May 2016–Apr 2018
24-Month
46.8°F
(8.2°C)
43.4°F
(6.3°C)
3.4°F
(1.9°C)
126th Coolest
Coolest since:
1913
1st Warmest
Warmest to Date
2018
May 2015–Apr 2018
36-Month
46.4°F
(8.0°C)
43.4°F
(6.3°C)
3.0°F
(1.7°C)
125th Coolest
Coolest since:
1914
1st Warmest
Warmest since:
2017, 2018, 2019
Ties: 2017, 2019
May 2014–Apr 2018
48-Month
46.6°F
(8.1°C)
43.4°F
(6.3°C)
3.2°F
(1.8°C)
124th Coolest
Coolest since:
1899, 1915
1st Warmest
Warmest to Date
2018
May 2013–Apr 2018
60-Month
46.3°F
(7.9°C)
43.3°F
(6.3°C)
3.0°F
(1.6°C)
123rd Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2018, 2019
Ties: 2019

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