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, December 2009

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
December 2009
1-Month
32.1°F
(0.1°C)
32.4°F
(0.2°C)
-0.3°F
(-0.1°C)
46th Coolest
Coolest since:
1989
83rd Warmest
Warmest since:
2015
Nov–Dec 2009
2-Month
39.6°F
(4.2°C)
37.3°F
(2.9°C)
2.3°F
(1.3°C)
97th Coolest
Coolest since:
1976
32nd Warmest
Warmest since:
2015
Ties: 1964, 1978
Oct–Dec 2009
3-Month
43.5°F
(6.4°C)
42.9°F
(6.1°C)
0.6°F
(0.3°C)
71st Coolest
Coolest since:
1917
58th Warmest
Warmest since:
2015
Ties: 1912, 1978, 2005
Sep–Dec 2009
4-Month
49.1°F
(9.5°C)
48.7°F
(9.3°C)
0.4°F
(0.2°C)
61st Coolest
Coolest since:
1976
68th Warmest
Warmest since:
1931
Aug–Dec 2009
5-Month
53.6°F
(12.0°C)
53.4°F
(11.9°C)
0.2°F
(0.1°C)
60th Coolest
Coolest since:
1976
69th Warmest
Warmest since:
1931
Ties: 1919, 2010
Jul–Dec 2009
6-Month
56.2°F
(13.4°C)
56.8°F
(13.8°C)
-0.6°F
(-0.4°C)
33rd Coolest
Coolest since:
1976
96th Warmest
Warmest since:
1931
Ties: 1895, 1901, 1935
Jun–Dec 2009
7-Month
58.3°F
(14.6°C)
58.7°F
(14.8°C)
-0.4°F
(-0.2°C)
35th Coolest
Coolest since:
1976
94th Warmest
Warmest since:
1931
Ties: 1943, 2014
May–Dec 2009
8-Month
58.8°F
(14.9°C)
59.1°F
(15.1°C)
-0.3°F
(-0.2°C)
41st Coolest
Coolest since:
1917
88th Warmest
Warmest since:
1931
Ties: 1927, 1943, 1983
Apr–Dec 2009
9-Month
58.1°F
(14.5°C)
58.2°F
(14.6°C)
-0.1°F
(-0.1°C)
44th Coolest
Coolest since:
1917
85th Warmest
Warmest since:
2015
Ties: 1898, 1932, 1940, 1980, 2008
Mar–Dec 2009
10-Month
56.8°F
(13.8°C)
56.5°F
(13.6°C)
0.3°F
(0.2°C)
64th Coolest
Coolest since:
1917
65th Warmest
Warmest since:
2016
Ties: 1952
Feb–Dec 2009
11-Month
54.7°F
(12.6°C)
54.3°F
(12.4°C)
0.4°F
(0.2°C)
74th Coolest
Coolest since:
1917
55th Warmest
Warmest since:
2012
Ties: 1925, 1944, 1970, 1971, 1984
Jan–Dec 2009
12-Month
52.2°F
(11.2°C)
52.2°F
(11.2°C)
0.0°F
(0.0°C)
58th Coolest
Coolest since:
1917
71st Warmest
Warmest since:
2012
Ties: 1899, 1974, 1983, 1995, 2013
Jul 2008–Dec 2009
18-Month
53.6°F
(12.0°C)
53.7°F
(12.1°C)
-0.1°F
(-0.1°C)
46th Coolest
Coolest since:
1904, 1917
82nd Warmest
Warmest since:
2012, 2016
Ties: 1899
Jan 2008–Dec 2009
24-Month
52.2°F
(11.2°C)
52.2°F
(11.2°C)
0.0°F
(0.0°C)
59th Coolest
Coolest since:
1979
69th Warmest
Warmest since:
2017
Ties: 1901, 1928, 1984, 1995
Jan 2007–Dec 2009
36-Month
52.8°F
(11.6°C)
52.1°F
(11.2°C)
0.7°F
(0.4°C)
88th Coolest
Coolest since:
1980
39th Warmest
Warmest since:
2018
Ties: 1900, 1940, 1957, 1975, 1993, 2014
Jan 2006–Dec 2009
48-Month
53.1°F
(11.7°C)
52.2°F
(11.2°C)
0.9°F
(0.5°C)
103rd Coolest
Coolest since:
1979
23rd Warmest
Warmest since:
2019
Ties: 1923, 1954, 2014
Jan 2005–Dec 2009
60-Month
53.2°F
(11.8°C)
52.2°F
(11.2°C)
1.0°F
(0.6°C)
107th Coolest
Coolest since:
1980
18th Warmest
Warmest since:
2020
Ties: 1933, 1957, 2003, 2015, 2017

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