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 2015

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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2015
1-Month
45.1°F
(7.3°C)
32.4°F
(0.2°C)
12.7°F
(7.1°C)
128th Coolest
Coolest since:
1989
1st Warmest
Warmest to Date
2015
Nov–Dec 2015
2-Month
46.6°F
(8.1°C)
37.3°F
(2.9°C)
9.3°F
(5.2°C)
128th Coolest
Coolest since:
1976
1st Warmest
Warmest to Date
2015
Oct–Dec 2015
3-Month
49.6°F
(9.8°C)
43.0°F
(6.1°C)
6.6°F
(3.7°C)
128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Sep–Dec 2015
4-Month
54.3°F
(12.4°C)
48.7°F
(9.3°C)
5.6°F
(3.1°C)
127th Coolest
Coolest since:
1976
2nd Warmest
Warmest since:
1931
Aug–Dec 2015
5-Month
57.6°F
(14.2°C)
53.3°F
(11.8°C)
4.3°F
(2.4°C)
127th Coolest
Coolest since:
1976
2nd Warmest
Warmest since:
1931
Jul–Dec 2015
6-Month
60.2°F
(15.7°C)
56.7°F
(13.7°C)
3.5°F
(2.0°C)
127th Coolest
Coolest since:
1976
2nd Warmest
Warmest since:
1931
Jun–Dec 2015
7-Month
61.8°F
(16.6°C)
58.6°F
(14.8°C)
3.2°F
(1.8°C)
127th Coolest
Coolest since:
1976
2nd Warmest
Warmest since:
1931
Ties: 2016
May–Dec 2015
8-Month
62.3°F
(16.8°C)
59.1°F
(15.1°C)
3.2°F
(1.7°C)
127th Coolest
Coolest since:
1917
2nd Warmest
Warmest since:
1931
Apr–Dec 2015
9-Month
61.3°F
(16.3°C)
58.2°F
(14.6°C)
3.1°F
(1.7°C)
128th Coolest
Coolest since:
1917
1st Warmest
Warmest to Date
2015
Mar–Dec 2015
10-Month
59.1°F
(15.1°C)
56.5°F
(13.6°C)
2.6°F
(1.5°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
2016
Ties: 2007
Feb–Dec 2015
11-Month
55.7°F
(13.2°C)
54.2°F
(12.3°C)
1.5°F
(0.9°C)
109th Coolest
Coolest since:
1917
20th Warmest
Warmest since:
2012
Ties: 1953, 1990
Jan–Dec 2015
12-Month
53.4°F
(11.9°C)
52.2°F
(11.2°C)
1.2°F
(0.7°C)
98th Coolest
Coolest since:
1917
31st Warmest
Warmest since:
2012
Ties: 1941, 1973
Jul 2014–Dec 2015
18-Month
54.3°F
(12.4°C)
53.8°F
(12.1°C)
0.5°F
(0.3°C)
86th Coolest
Coolest since:
1904, 1917
42nd Warmest
Warmest since:
2012, 2016
Ties: 1911, 1973, 1974, 1990
Jan 2014–Dec 2015
24-Month
52.1°F
(11.2°C)
52.1°F
(11.2°C)
0.0°F
(0.0°C)
47th Coolest
Coolest since:
1979
81st Warmest
Warmest since:
2017
Ties: 1908, 1912, 1920, 1930, 1937, 1940, 1943, 1948, 1971, 1983, 1994
Jan 2013–Dec 2015
36-Month
52.1°F
(11.2°C)
52.1°F
(11.2°C)
0.0°F
(0.0°C)
44th Coolest
Coolest since:
1980
83rd Warmest
Warmest since:
2018
Ties: 1902, 1909, 1910, 1920, 1927, 1937, 1952, 1984, 1985, 1994, 1995
Jan 2012–Dec 2015
48-Month
53.0°F
(11.7°C)
52.2°F
(11.2°C)
0.8°F
(0.5°C)
99th Coolest
Coolest since:
1979
27th Warmest
Warmest since:
2019
Ties: 1932, 1935, 1939, 1949, 1957, 1992, 1999, 2003
Jan 2011–Dec 2015
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, 2009, 2017

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