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 2009

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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 2009
1-Month
52.6°F
(11.4°C)
51.5°F
(10.8°C)
1.1°F
(0.6°C)
76th Coolest
Coolest since:
1907
53rd Warmest
Warmest since:
1896
Ties: 1965, 1976, 1998
Mar–Apr 2009
2-Month
48.6°F
(9.2°C)
46.3°F
(7.9°C)
2.3°F
(1.3°C)
95th Coolest
Coolest since:
1926
34th Warmest
Warmest since:
2012
Feb–Apr 2009
3-Month
43.8°F
(6.6°C)
41.5°F
(5.3°C)
2.3°F
(1.3°C)
105th Coolest
Coolest since:
1978
24th Warmest
Warmest since:
2012
Ties: 1986, 1992, 2006
Jan–Apr 2009
4-Month
39.1°F
(3.9°C)
38.5°F
(3.6°C)
0.6°F
(0.3°C)
72nd Coolest
Coolest since:
1978
57th Warmest
Warmest since:
2017
Ties: 1937, 2008
Dec 2008–Apr 2009
5-Month
37.8°F
(3.2°C)
37.2°F
(2.9°C)
0.6°F
(0.3°C)
68th Coolest
Coolest since:
1978
60th Warmest
Warmest since:
2012
Ties: 1896, 1929
Nov 2008–Apr 2009
6-Month
38.4°F
(3.6°C)
38.2°F
(3.4°C)
0.2°F
(0.2°C)
61st Coolest
Coolest since:
1904
67th Warmest
Warmest since:
2012
Ties: 1908, 1937, 1997
Oct 2008–Apr 2009
7-Month
40.5°F
(4.7°C)
40.4°F
(4.7°C)
0.1°F
(0.0°C)
56th Coolest
Coolest since:
1978
72nd Warmest
Warmest since:
2017
Ties: 1897, 1910, 1941, 2011
Sep 2008–Apr 2009
8-Month
43.9°F
(6.6°C)
43.6°F
(6.4°C)
0.3°F
(0.2°C)
68th Coolest
Coolest since:
1918, 1977
60th Warmest
Warmest since:
2017
Ties: 1930, 1947, 2010, 2013
Aug 2008–Apr 2009
9-Month
46.9°F
(8.3°C)
46.7°F
(8.2°C)
0.2°F
(0.1°C)
64th Coolest
Coolest since:
1977
64th Warmest
Warmest since:
2017
Ties: 2010, 2018
Jul 2008–Apr 2009
10-Month
49.5°F
(9.7°C)
49.5°F
(9.7°C)
0.0°F
(0.0°C)
59th Coolest
Coolest since:
1977
69th Warmest
Warmest since:
2017
Ties: 1981, 1988
Jun 2008–Apr 2009
11-Month
51.6°F
(10.9°C)
51.4°F
(10.8°C)
0.2°F
(0.1°C)
69th Coolest
Coolest since:
1977
59th Warmest
Warmest since:
2017
Ties: 1913, 1925, 1934, 1952, 1988
May 2008–Apr 2009
12-Month
52.1°F
(11.2°C)
52.2°F
(11.2°C)
-0.1°F
(0.0°C)
48th Coolest
Coolest since:
1918
80th Warmest
Warmest since:
2017
Ties: 1906, 1943, 1966, 1971, 1981, 1997, 2010
Nov 2007–Apr 2009
18-Month
47.8°F
(8.8°C)
47.5°F
(8.6°C)
0.3°F
(0.2°C)
73rd Coolest
Coolest since:
1905, 1918
54th Warmest
Warmest since:
2017
Ties: 1910, 1943, 1956, 1957, 1973
May 2007–Apr 2009
24-Month
53.1°F
(11.7°C)
52.2°F
(11.2°C)
0.9°F
(0.5°C)
101st Coolest
Coolest since:
1978
26th Warmest
Warmest since:
2017
Ties: 2001, 2002
May 2006–Apr 2009
36-Month
53.0°F
(11.7°C)
52.2°F
(11.2°C)
0.8°F
(0.5°C)
96th Coolest
Coolest since:
1979
30th Warmest
Warmest since:
2018
Ties: 1921
May 2005–Apr 2009
48-Month
53.3°F
(11.8°C)
52.1°F
(11.2°C)
1.2°F
(0.6°C)
112th Coolest
Coolest since:
1980
13th Warmest
Warmest since:
2019
Ties: 1922, 1934, 1955, 2001, 2003, 2007, 2012
May 2004–Apr 2009
60-Month
53.4°F
(11.9°C)
52.2°F
(11.2°C)
1.2°F
(0.7°C)
113th Coolest
Coolest since:
1981
11th Warmest
Warmest since:
2020
Ties: 2017

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