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, September 1898

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Record Coolest
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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1898 1-Month	69.7°F (20.9°C)	67.4°F (19.7°C)	2.3°F (1.2°C)	102nd Coolest	Coolest since: 1897	1917
	69.7°F (20.9°C)	67.4°F (19.7°C)	2.3°F (1.2°C)	27th Warmest	Warmest since: 1895	2018
	Ties: 1941
Aug–Sep 1898 2-Month	73.0°F (22.8°C)	70.6°F (21.4°C)	2.4°F (1.4°C)	109th Coolest	Coolest since: 1897	1927, 1963
	73.0°F (22.8°C)	70.6°F (21.4°C)	2.4°F (1.4°C)	20th Warmest	Warmest since: 1895	2018
	Ties: 1977, 2020
Jul–Sep 1898 3-Month	74.3°F (23.5°C)	72.2°F (22.3°C)	2.1°F (1.2°C)	111th Coolest	Coolest since: 1897	1909
Jul–Sep 1898 3-Month	74.3°F (23.5°C)	72.2°F (22.3°C)	2.1°F (1.2°C)	18th Warmest	Warmest to Date	2016
Jun–Sep 1898 4-Month	73.5°F (23.1°C)	71.9°F (22.2°C)	1.6°F (0.9°C)	107th Coolest	Coolest since: 1897	1927
	73.5°F (23.1°C)	71.9°F (22.2°C)	1.6°F (0.9°C)	22nd Warmest	Warmest to Date	2010
	Ties: 1931, 1980, 1993, 1995, 2006
May–Sep 1898 5-Month	71.0°F (21.7°C)	69.9°F (21.1°C)	1.1°F (0.6°C)	90th Coolest	Coolest since: 1897	1924, 1927
	71.0°F (21.7°C)	69.9°F (21.1°C)	1.1°F (0.6°C)	39th Warmest	Warmest to Date	2010
	Ties: 1939, 1986, 1988, 2014
Apr–Sep 1898 6-Month	67.3°F (19.6°C)	66.9°F (19.4°C)	0.4°F (0.2°C)	66th Coolest	Coolest since: 1897	1907
Apr–Sep 1898 6-Month	67.3°F (19.6°C)	66.9°F (19.4°C)	0.4°F (0.2°C)	63rd Warmest	Warmest since: 1896	2010
Mar–Sep 1898 7-Month	64.4°F (18.0°C)	63.5°F (17.5°C)	0.9°F (0.5°C)	93rd Coolest	Coolest since: 1897	1924
	64.4°F (18.0°C)	63.5°F (17.5°C)	0.9°F (0.5°C)	36th Warmest	Warmest to Date	2010
	Ties: 1900, 1925, 1930, 1936, 1949, 1953, 1994, 2000
Feb–Sep 1898 8-Month	60.7°F (15.9°C)	59.8°F (15.4°C)	0.9°F (0.5°C)	85th Coolest	Coolest since: 1897	1907
	60.7°F (15.9°C)	59.8°F (15.4°C)	0.9°F (0.5°C)	44th Warmest	Warmest to Date	2012
	Ties: 1942, 1986, 1988, 2007
Jan–Sep 1898 9-Month	57.9°F (14.4°C)	56.9°F (13.8°C)	1.0°F (0.6°C)	91st Coolest	Coolest since: 1897	1940
	57.9°F (14.4°C)	56.9°F (13.8°C)	1.0°F (0.6°C)	38th Warmest	Warmest to Date	2012
	Ties: 1932, 1976, 1989, 2009
Dec 1897–Sep 1898 10-Month	55.9°F (13.3°C)	54.8°F (12.7°C)	1.1°F (0.6°C)	88th Coolest	Coolest since: 1897	1904
	55.9°F (13.3°C)	54.8°F (12.7°C)	1.1°F (0.6°C)	40th Warmest	Warmest to Date	2012
	Ties: 1976, 1997, 2015
Nov 1897–Sep 1898 11-Month	54.9°F (12.7°C)	54.0°F (12.2°C)	0.9°F (0.5°C)	84th Coolest	Coolest since: 1897	1904
	54.9°F (12.7°C)	54.0°F (12.2°C)	0.9°F (0.5°C)	44th Warmest	Warmest to Date	2012
	Ties: 1925, 1942, 1974, 2015
Oct 1897–Sep 1898 12-Month	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	86th Coolest	Coolest since: 1897	1904
	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	42nd Warmest	Warmest to Date	2012
	Ties: 1930, 1973, 1974, 1980, 1987
Apr 1897–Sep 1898 18-Month	58.6°F (14.8°C)	58.4°F (14.7°C)	0.2°F (0.1°C)	65th Coolest	Coolest since: 1897	1918
	58.6°F (14.8°C)	58.4°F (14.7°C)	0.2°F (0.1°C)	63rd Warmest	Warmest to Date	2012
	Ties: 1944, 1959, 1973, 1975, 1981, 2001
Oct 1896–Sep 1898 24-Month	54.2°F (12.3°C)	54.2°F (12.3°C)	0.0°F (0.0°C)	49th Coolest	Coolest since: 1897	1905
	54.2°F (12.3°C)	54.2°F (12.3°C)	0.0°F (0.0°C)	78th Warmest	Warmest to Date	2017
	Ties: 1934, 1946, 1948, 1983, 1997
Oct 1895–Sep 1898 36-Month	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	51st Coolest	Coolest to Date	1905, 1918
	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	75th Warmest	Warmest to Date	2018
	Ties: 1938, 1948, 1960, 1981

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings