Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Delaware

Average Temperature Rankings, May 2015

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
May 2015 1-Month	67.9°F (19.9°C)	62.1°F (16.7°C)	5.8°F (3.2°C)	125th Coolest	Coolest since: 2014	1967
May 2015 1-Month	67.9°F (19.9°C)	62.1°F (16.7°C)	5.8°F (3.2°C)	4th Warmest	Warmest since: 2004	2004
Apr–May 2015 2-Month	61.0°F (16.1°C)	57.0°F (13.9°C)	4.0°F (2.2°C)	121st Coolest	Coolest since: 2014	1907
Apr–May 2015 2-Month	61.0°F (16.1°C)	57.0°F (13.9°C)	4.0°F (2.2°C)	8th Warmest	Warmest since: 2012	2019
Mar–May 2015 3-Month	54.0°F (12.2°C)	52.3°F (11.3°C)	1.7°F (0.9°C)	97th Coolest	Coolest since: 2014	1940
	54.0°F (12.2°C)	52.3°F (11.3°C)	1.7°F (0.9°C)	32nd Warmest	Warmest since: 2012	2012
	Ties: 2008, 2009, 2020
Feb–May 2015 4-Month	47.1°F (8.4°C)	47.8°F (8.8°C)	-0.7°F (-0.4°C)	41st Coolest	Coolest since: 2003	1934
	47.1°F (8.4°C)	47.8°F (8.8°C)	-0.7°F (-0.4°C)	88th Warmest	Warmest since: 2014	2012
	Ties: 1963, 1996
Jan–May 2015 5-Month	44.1°F (6.7°C)	44.9°F (7.2°C)	-0.8°F (-0.5°C)	40th Coolest	Coolest since: 2003	1940
	44.1°F (6.7°C)	44.9°F (7.2°C)	-0.8°F (-0.5°C)	89th Warmest	Warmest since: 2014	2012
	Ties: 1956
Dec 2014–May 2015 6-Month	43.6°F (6.4°C)	43.5°F (6.4°C)	0.1°F (0.0°C)	58th Coolest	Coolest since: 2014	1904
	43.6°F (6.4°C)	43.5°F (6.4°C)	0.1°F (0.0°C)	70th Warmest	Warmest since: 2014	2012
	Ties: 1944, 1947, 1980, 2001, 2014
Nov 2014–May 2015 7-Month	43.7°F (6.5°C)	43.8°F (6.6°C)	-0.1°F (-0.1°C)	51st Coolest	Coolest since: 2003	1904
	43.7°F (6.5°C)	43.8°F (6.6°C)	-0.1°F (-0.1°C)	77th Warmest	Warmest since: 2014	2012
	Ties: 1906, 1928, 1959, 1987, 2001
Oct 2014–May 2015 8-Month	45.7°F (7.6°C)	45.4°F (7.4°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 2003	1904
	45.7°F (7.6°C)	45.4°F (7.4°C)	0.3°F (0.2°C)	61st Warmest	Warmest since: 2014	2012
	Ties: 1930
Sep 2014–May 2015 9-Month	48.3°F (9.1°C)	47.8°F (8.8°C)	0.5°F (0.3°C)	74th Coolest	Coolest since: 2014	1904, 1918
	48.3°F (9.1°C)	47.8°F (8.8°C)	0.5°F (0.3°C)	54th Warmest	Warmest since: 2013	2012
	Ties: 1898, 1962, 1980
Aug 2014–May 2015 10-Month	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	72nd Coolest	Coolest since: 2014	1904
	50.7°F (10.4°C)	50.4°F (10.2°C)	0.3°F (0.2°C)	56th Warmest	Warmest since: 2013	2012
	Ties: 1898, 1909, 1922, 1973, 1989
Jul 2014–May 2015 11-Month	53.0°F (11.7°C)	52.7°F (11.5°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 2001	1904
	53.0°F (11.7°C)	52.7°F (11.5°C)	0.3°F (0.2°C)	59th Warmest	Warmest since: 2014	2012
	Ties: 1909, 1975
Jun 2014–May 2015 12-Month	54.7°F (12.6°C)	54.3°F (12.4°C)	0.4°F (0.2°C)	77th Coolest	Coolest since: 2003	1904
	54.7°F (12.6°C)	54.3°F (12.4°C)	0.4°F (0.2°C)	51st Warmest	Warmest since: 2014	2012
	Ties: 1903, 1922, 1983, 2003
Dec 2013–May 2015 18-Month	51.0°F (10.6°C)	50.6°F (10.3°C)	0.4°F (0.3°C)	76th Coolest	Coolest since: 1997	1905
	51.0°F (10.6°C)	50.6°F (10.3°C)	0.4°F (0.3°C)	51st Warmest	Warmest since: 2014	2017
	Ties: 1909, 1943, 1958, 1987, 1988, 1989, 1994
Jun 2013–May 2015 24-Month	54.8°F (12.7°C)	54.2°F (12.3°C)	0.6°F (0.4°C)	84th Coolest	Coolest since: 1997	1905
	54.8°F (12.7°C)	54.2°F (12.3°C)	0.6°F (0.4°C)	43rd Warmest	Warmest since: 2014	2017
	Ties: 1943, 1989
Jun 2012–May 2015 36-Month	55.4°F (13.0°C)	54.2°F (12.3°C)	1.2°F (0.7°C)	101st Coolest	Coolest since: 2005	1906
	55.4°F (13.0°C)	54.2°F (12.3°C)	1.2°F (0.7°C)	25th Warmest	Warmest since: 2014	2018, 2021
	Ties: 2003
Jun 2011–May 2015 48-Month	56.3°F (13.5°C)	54.2°F (12.3°C)	2.1°F (1.2°C)	114th Coolest	Coolest since: 2011	1907
	56.3°F (13.5°C)	54.2°F (12.3°C)	2.1°F (1.2°C)	11th Warmest	Warmest since: 2014	2019
	Ties: 2008, 2011
Jun 2010–May 2015 60-Month	56.4°F (13.6°C)	54.2°F (12.3°C)	2.2°F (1.3°C)	113th Coolest	Coolest since: 2011	1908
	56.4°F (13.6°C)	54.2°F (12.3°C)	2.2°F (1.3°C)	11th Warmest	Warmest since: 2014	2020
	Ties: 2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published February 2023, retrieved on February 9, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings