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 1988

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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 1988 1-Month	65.8°F (18.8°C)	67.4°F (19.7°C)	-1.6°F (-0.9°C)	22nd Coolest	Coolest since: 1984	1917
	65.8°F (18.8°C)	67.4°F (19.7°C)	-1.6°F (-0.9°C)	107th Warmest	Warmest since: 1987	2018
	Ties: 1958
Aug–Sep 1988 2-Month	71.6°F (22.0°C)	70.6°F (21.4°C)	1.0°F (0.6°C)	84th Coolest	Coolest since: 1986	1927, 1963
	71.6°F (22.0°C)	70.6°F (21.4°C)	1.0°F (0.6°C)	45th Warmest	Warmest since: 1987	2018
	Ties: 1901, 1960, 2001
Jul–Sep 1988 3-Month	73.8°F (23.2°C)	72.2°F (22.3°C)	1.6°F (0.9°C)	97th Coolest	Coolest since: 1986	1909
	73.8°F (23.2°C)	72.2°F (22.3°C)	1.6°F (0.9°C)	32nd Warmest	Warmest since: 1987	2016
	Ties: 1921, 1983
Jun–Sep 1988 4-Month	73.3°F (22.9°C)	71.9°F (22.2°C)	1.4°F (0.7°C)	100th Coolest	Coolest since: 1986	1927
	73.3°F (22.9°C)	71.9°F (22.2°C)	1.4°F (0.7°C)	29th Warmest	Warmest since: 1987	2010
	Ties: 1901, 1921, 1925
May–Sep 1988 5-Month	71.0°F (21.7°C)	69.9°F (21.1°C)	1.1°F (0.6°C)	90th Coolest	Coolest since: 1986	1924, 1927
	71.0°F (21.7°C)	69.9°F (21.1°C)	1.1°F (0.6°C)	39th Warmest	Warmest since: 1987	2010
	Ties: 1898, 1939, 1986, 2014
Apr–Sep 1988 6-Month	67.6°F (19.8°C)	66.9°F (19.4°C)	0.7°F (0.4°C)	77th Coolest	Coolest since: 1984	1907
	67.6°F (19.8°C)	66.9°F (19.4°C)	0.7°F (0.4°C)	52nd Warmest	Warmest since: 1987	2010
	Ties: 1925, 1931, 1954, 1960, 1969
Mar–Sep 1988 7-Month	64.2°F (17.9°C)	63.5°F (17.5°C)	0.7°F (0.4°C)	81st Coolest	Coolest since: 1984	1924
	64.2°F (17.9°C)	63.5°F (17.5°C)	0.7°F (0.4°C)	48th Warmest	Warmest since: 1987	2010
	Ties: 1939, 1952
Feb–Sep 1988 8-Month	60.7°F (15.9°C)	59.8°F (15.4°C)	0.9°F (0.5°C)	85th Coolest	Coolest since: 1986	1907
	60.7°F (15.9°C)	59.8°F (15.4°C)	0.9°F (0.5°C)	44th Warmest	Warmest since: 1987	2012
	Ties: 1898, 1942, 1986, 2007
Jan–Sep 1988 9-Month	57.2°F (14.0°C)	56.9°F (13.8°C)	0.3°F (0.2°C)	60th Coolest	Coolest since: 1984	1940
	57.2°F (14.0°C)	56.9°F (13.8°C)	0.3°F (0.2°C)	69th Warmest	Warmest since: 1987	2012
	Ties: 1919, 1929, 1975
Dec 1987–Sep 1988 10-Month	55.4°F (13.0°C)	54.8°F (12.7°C)	0.6°F (0.3°C)	75th Coolest	Coolest since: 1986	1904
	55.4°F (13.0°C)	54.8°F (12.7°C)	0.6°F (0.3°C)	53rd Warmest	Warmest since: 1987	2012
	Ties: 1900, 1906, 1919, 1975
Nov 1987–Sep 1988 11-Month	54.8°F (12.7°C)	54.0°F (12.2°C)	0.8°F (0.5°C)	79th Coolest	Coolest since: 1987	1904
Nov 1987–Sep 1988 11-Month	54.8°F (12.7°C)	54.0°F (12.2°C)	0.8°F (0.5°C)	49th Warmest	Warmest since: 1986	2012
Oct 1987–Sep 1988 12-Month	54.6°F (12.6°C)	54.2°F (12.3°C)	0.4°F (0.3°C)	70th Coolest	Coolest since: 1984	1904
	54.6°F (12.6°C)	54.2°F (12.3°C)	0.4°F (0.3°C)	58th Warmest	Warmest since: 1987	2012
	Ties: 1906, 1929, 1943, 1950, 1972
Apr 1987–Sep 1988 18-Month	59.2°F (15.1°C)	58.4°F (14.7°C)	0.8°F (0.4°C)	86th Coolest	Coolest since: 1984	1918
	59.2°F (15.1°C)	58.4°F (14.7°C)	0.8°F (0.4°C)	42nd Warmest	Warmest since: 1987	2012
	Ties: 1913, 1939, 1943, 1952
Oct 1986–Sep 1988 24-Month	54.8°F (12.7°C)	54.2°F (12.3°C)	0.6°F (0.4°C)	80th Coolest	Coolest since: 1985	1905
	54.8°F (12.7°C)	54.2°F (12.3°C)	0.6°F (0.4°C)	47th Warmest	Warmest since: 1987	2017
	Ties: 1930, 1975, 1985
Oct 1985–Sep 1988 36-Month	55.0°F (12.8°C)	54.2°F (12.3°C)	0.8°F (0.5°C)	88th Coolest	Coolest since: 1986	1905, 1918
	55.0°F (12.8°C)	54.2°F (12.3°C)	0.8°F (0.5°C)	38th Warmest	Warmest since: 1987	2018
	Ties: 1985, 1986
Oct 1984–Sep 1988 48-Month	55.2°F (12.9°C)	54.2°F (12.3°C)	1.0°F (0.6°C)	94th Coolest	Coolest since: 1987	1905
	55.2°F (12.9°C)	54.2°F (12.3°C)	1.0°F (0.6°C)	31st Warmest	Warmest since: 1955	2019
	Ties: 1952, 1954
Oct 1983–Sep 1988 60-Month	54.9°F (12.7°C)	54.1°F (12.3°C)	0.8°F (0.4°C)	85th Coolest	Coolest since: 1986	1908
	54.9°F (12.7°C)	54.1°F (12.3°C)	0.8°F (0.4°C)	39th Warmest	Warmest since: 1987	2020
	Ties: 1952, 1956, 1957

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings