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.

Ohio River Basin

Average Temperature Rankings, April 1999

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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 1999
1-Month
54.8°F
(12.7°C)
51.5°F
(10.8°C)
3.3°F
(1.9°C)
112th Coolest
Coolest since:
1907
17th Warmest
Warmest since:
1896
Ties: 1921, 1986, 2011
Mar–Apr 1999
2-Month
46.3°F
(7.9°C)
46.3°F
(7.9°C)
0.0°F
(0.0°C)
63rd Coolest
Coolest since:
1926
66th Warmest
Warmest since:
2012
Feb–Apr 1999
3-Month
43.3°F
(6.3°C)
41.5°F
(5.3°C)
1.8°F
(1.0°C)
94th Coolest
Coolest since:
1978
35th Warmest
Warmest since:
2012
Ties: 1910
Jan–Apr 1999
4-Month
40.4°F
(4.7°C)
38.5°F
(3.6°C)
1.9°F
(1.1°C)
103rd Coolest
Coolest since:
1978
26th Warmest
Warmest since:
2017
Ties: 1933, 1935, 1973
Dec 1998–Apr 1999
5-Month
39.9°F
(4.4°C)
37.3°F
(2.9°C)
2.6°F
(1.5°C)
111th Coolest
Coolest since:
1978
17th Warmest
Warmest since:
2012
Ties: 1976
Nov 1998–Apr 1999
6-Month
40.8°F
(4.9°C)
38.1°F
(3.4°C)
2.7°F
(1.5°C)
114th Coolest
Coolest since:
1904
14th Warmest
Warmest since:
2012
Oct 1998–Apr 1999
7-Month
43.0°F
(6.1°C)
40.4°F
(4.7°C)
2.6°F
(1.4°C)
116th Coolest
Coolest since:
1978
12th Warmest
Warmest since:
2017
Ties: 1974
Sep 1998–Apr 1999
8-Month
46.3°F
(7.9°C)
43.6°F
(6.4°C)
2.7°F
(1.5°C)
120th Coolest
Coolest since:
1918, 1977
8th Warmest
Warmest since:
2017
Ties: 2006
Aug 1998–Apr 1999
9-Month
49.3°F
(9.6°C)
46.8°F
(8.2°C)
2.5°F
(1.4°C)
119th Coolest
Coolest since:
1977
9th Warmest
Warmest since:
2017
Jul 1998–Apr 1999
10-Month
51.7°F
(10.9°C)
49.5°F
(9.7°C)
2.2°F
(1.2°C)
120th Coolest
Coolest since:
1977
8th Warmest
Warmest since:
2017
Ties: 2000
Jun 1998–Apr 1999
11-Month
53.4°F
(11.9°C)
51.3°F
(10.7°C)
2.1°F
(1.2°C)
119th Coolest
Coolest since:
1977
9th Warmest
Warmest since:
2017
Ties: 1974, 2022
May 1998–Apr 1999
12-Month
54.4°F
(12.4°C)
52.2°F
(11.2°C)
2.2°F
(1.2°C)
122nd Coolest
Coolest since:
1918
6th Warmest
Warmest since:
2017
Ties: 2006
Nov 1997–Apr 1999
18-Month
50.0°F
(10.0°C)
47.5°F
(8.6°C)
2.5°F
(1.4°C)
124th Coolest
Coolest since:
1905, 1918
3rd Warmest
Warmest since:
2017
Ties: 1992
May 1997–Apr 1999
24-Month
53.6°F
(12.0°C)
52.2°F
(11.2°C)
1.4°F
(0.8°C)
111th Coolest
Coolest since:
1978
16th Warmest
Warmest since:
2017
May 1996–Apr 1999
36-Month
53.1°F
(11.7°C)
52.2°F
(11.2°C)
0.9°F
(0.5°C)
99th Coolest
Coolest since:
1979
27th Warmest
Warmest since:
2018
Ties: 1950, 2004
May 1995–Apr 1999
48-Month
52.6°F
(11.4°C)
52.1°F
(11.2°C)
0.5°F
(0.2°C)
77th Coolest
Coolest since:
1980
48th Warmest
Warmest since:
2019
Ties: 1925, 1942, 1946, 1948, 1949, 1994
May 1994–Apr 1999
60-Month
52.7°F
(11.5°C)
52.2°F
(11.2°C)
0.5°F
(0.3°C)
80th Coolest
Coolest since:
1981
44th Warmest
Warmest since:
2020
Ties: 1942, 1945, 1949, 1950, 1953, 1976, 1990, 1995

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