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 1998

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1998
1-Month
40.4°F
(4.7°C)
41.7°F
(5.4°C)
-1.3°F
(-0.7°C)
36th Coolest
Coolest since:
1920
93rd Warmest
Warmest since:
1992
Ties: 1967, 1995, 2011, 2013
Mar–Apr 1998
2-Month
36.9°F
(2.7°C)
37.2°F
(2.9°C)
-0.3°F
(-0.2°C)
51st Coolest
Coolest since:
1917
78th Warmest
Warmest since:
1934, 1992
Ties: 1953, 1957
Feb–Apr 1998
3-Month
33.7°F
(0.9°C)
33.4°F
(0.8°C)
0.3°F
(0.1°C)
69th Coolest
Coolest since:
1903
60th Warmest
Warmest since:
1934
Ties: 1941, 1962, 1976, 1993
Jan–Apr 1998
4-Month
32.0°F
(0.0°C)
30.3°F
(-0.9°C)
1.7°F
(0.9°C)
94th Coolest
Coolest since:
1917
35th Warmest
Warmest since:
1934
Dec 1997–Apr 1998
5-Month
30.1°F
(-1.1°C)
28.8°F
(-1.8°C)
1.3°F
(0.7°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
1934
Ties: 1935, 1951, 1977
Nov 1997–Apr 1998
6-Month
30.5°F
(-0.8°C)
29.4°F
(-1.4°C)
1.1°F
(0.6°C)
86th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
1934
Ties: 1982
Oct 1997–Apr 1998
7-Month
32.5°F
(0.3°C)
31.6°F
(-0.2°C)
0.9°F
(0.5°C)
83rd Coolest
Coolest since:
1917
45th Warmest
Warmest since:
1934
Ties: 1956, 1961, 2020
Sep 1997–Apr 1998
8-Month
35.8°F
(2.1°C)
34.8°F
(1.6°C)
1.0°F
(0.5°C)
88th Coolest
Coolest since:
1917
40th Warmest
Warmest since:
1934
Ties: 1918, 1967, 1982, 2001, 2013
Aug 1997–Apr 1998
9-Month
39.0°F
(3.9°C)
38.1°F
(3.4°C)
0.9°F
(0.5°C)
82nd Coolest
Coolest since:
1917
46th Warmest
Warmest since:
1934
Jul 1997–Apr 1998
10-Month
41.7°F
(5.4°C)
40.9°F
(4.9°C)
0.8°F
(0.5°C)
80th Coolest
Coolest since:
1917
48th Warmest
Warmest since:
1934
Ties: 1918
Jun 1997–Apr 1998
11-Month
43.6°F
(6.4°C)
42.8°F
(6.0°C)
0.8°F
(0.4°C)
84th Coolest
Coolest since:
1917
44th Warmest
Warmest since:
1934
Ties: 1941, 2008
May 1997–Apr 1998
12-Month
44.4°F
(6.9°C)
43.4°F
(6.3°C)
1.0°F
(0.6°C)
86th Coolest
Coolest since:
1917
42nd Warmest
Warmest since:
1934, 2015, 2018
Ties: 1907, 2008, 2011, 2020
Nov 1996–Apr 1998
18-Month
39.7°F
(4.3°C)
38.7°F
(3.7°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1913
37th Warmest
Warmest since:
2018
Ties: 1934, 1989
May 1996–Apr 1998
24-Month
44.5°F
(6.9°C)
43.4°F
(6.3°C)
1.1°F
(0.6°C)
93rd Coolest
Coolest since:
1913
34th Warmest
Warmest since:
2018
Ties: 1991, 2010
May 1995–Apr 1998
36-Month
44.6°F
(7.0°C)
43.4°F
(6.3°C)
1.2°F
(0.7°C)
96th Coolest
Coolest since:
1914
30th Warmest
Warmest since:
2017, 2018, 2019
May 1994–Apr 1998
48-Month
44.9°F
(7.2°C)
43.3°F
(6.3°C)
1.6°F
(0.9°C)
105th Coolest
Coolest since:
1899, 1915
20th Warmest
Warmest to Date
2018
May 1993–Apr 1998
60-Month
44.7°F
(7.1°C)
43.4°F
(6.3°C)
1.3°F
(0.8°C)
101st Coolest
Coolest since:
1917
23rd Warmest
Warmest since:
2018, 2019
Ties: 1938, 1990, 2012

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