Regional Rankings

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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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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: 2014	1989
December 2015 1-Month	45.1°F (7.3°C)	32.4°F (0.2°C)	12.7°F (7.1°C)	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: 2014	1976
Nov–Dec 2015 2-Month	46.6°F (8.1°C)	37.3°F (2.9°C)	9.3°F (5.2°C)	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: 2014	1917
Oct–Dec 2015 3-Month	49.6°F (9.8°C)	43.0°F (6.1°C)	6.6°F (3.7°C)	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: 2014	1976
Sep–Dec 2015 4-Month	54.3°F (12.4°C)	48.7°F (9.3°C)	5.6°F (3.1°C)	2nd Warmest	Warmest since: 1931	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: 2014	1976
Aug–Dec 2015 5-Month	57.6°F (14.2°C)	53.3°F (11.8°C)	4.3°F (2.4°C)	2nd Warmest	Warmest since: 1931	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: 2014	1976
Jul–Dec 2015 6-Month	60.2°F (15.7°C)	56.7°F (13.7°C)	3.5°F (2.0°C)	2nd Warmest	Warmest since: 1931	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: 2014	1976
	61.8°F (16.6°C)	58.6°F (14.8°C)	3.2°F (1.8°C)	2nd Warmest	Warmest since: 1931	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: 2014	1917
May–Dec 2015 8-Month	62.3°F (16.8°C)	59.1°F (15.1°C)	3.2°F (1.7°C)	2nd Warmest	Warmest since: 1931	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: 2014	1917
Apr–Dec 2015 9-Month	61.3°F (16.3°C)	58.2°F (14.6°C)	3.1°F (1.7°C)	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: 2014	1917
	59.1°F (15.1°C)	56.5°F (13.6°C)	2.6°F (1.5°C)	4th Warmest	Warmest since: 2012	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: 2014	1917
	55.7°F (13.2°C)	54.2°F (12.3°C)	1.5°F (0.9°C)	20th Warmest	Warmest since: 2012	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: 2014	1917
	53.4°F (11.9°C)	52.2°F (11.2°C)	1.2°F (0.7°C)	31st Warmest	Warmest since: 2012	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: 2014	1904, 1917
	54.3°F (12.4°C)	53.8°F (12.1°C)	0.5°F (0.3°C)	42nd Warmest	Warmest since: 2012	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: 2014	1979
	52.1°F (11.2°C)	52.1°F (11.2°C)	0.0°F (0.0°C)	81st Warmest	Warmest since: 2013	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: 1997	1980
	52.1°F (11.2°C)	52.1°F (11.2°C)	0.0°F (0.0°C)	83rd Warmest	Warmest since: 2014	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: 2011	1979
	53.0°F (11.7°C)	52.2°F (11.2°C)	0.8°F (0.5°C)	27th Warmest	Warmest since: 2014	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: 2014	1980
	53.2°F (11.8°C)	52.2°F (11.2°C)	1.0°F (0.6°C)	18th Warmest	Warmest since: 2013	2020
	Ties: 1933, 1957, 2003, 2009, 2017

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings