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 1947

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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 1947 1-Month	68.1°F (20.1°C)	67.4°F (19.7°C)	0.7°F (0.4°C)	73rd Coolest	Coolest since: 1946	1917
	68.1°F (20.1°C)	67.4°F (19.7°C)	0.7°F (0.4°C)	56th Warmest	Warmest since: 1945	2018
	Ties: 1939, 1996
Aug–Sep 1947 2-Month	72.0°F (22.2°C)	70.6°F (21.4°C)	1.4°F (0.8°C)	94th Coolest	Coolest since: 1946	1927, 1963
	72.0°F (22.2°C)	70.6°F (21.4°C)	1.4°F (0.8°C)	35th Warmest	Warmest since: 1939	2018
	Ties: 1936, 1993
Jul–Sep 1947 3-Month	72.6°F (22.6°C)	72.2°F (22.3°C)	0.4°F (0.3°C)	76th Coolest	Coolest since: 1946	1909
	72.6°F (22.6°C)	72.2°F (22.3°C)	0.4°F (0.3°C)	53rd Warmest	Warmest since: 1944	2016
	Ties: 1895, 1942, 1954, 1957, 1989
Jun–Sep 1947 4-Month	71.7°F (22.1°C)	71.9°F (22.2°C)	-0.2°F (-0.1°C)	49th Coolest	Coolest since: 1946	1927
	71.7°F (22.1°C)	71.9°F (22.2°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1945	2010
	Ties: 1951, 1975, 1984
May–Sep 1947 5-Month	69.9°F (21.1°C)	69.9°F (21.1°C)	0.0°F (0.0°C)	52nd Coolest	Coolest since: 1946	1924, 1927
	69.9°F (21.1°C)	69.9°F (21.1°C)	0.0°F (0.0°C)	77th Warmest	Warmest since: 1945	2010
	Ties: 1899, 1914, 1922, 1945, 1954, 1964
Apr–Sep 1947 6-Month	67.1°F (19.5°C)	66.9°F (19.4°C)	0.2°F (0.1°C)	58th Coolest	Coolest since: 1946	1907
	67.1°F (19.5°C)	66.9°F (19.4°C)	0.2°F (0.1°C)	71st Warmest	Warmest since: 1945	2010
	Ties: 1922, 1938, 1968
Mar–Sep 1947 7-Month	62.8°F (17.1°C)	63.5°F (17.5°C)	-0.7°F (-0.4°C)	29th Coolest	Coolest since: 1940	1924
	62.8°F (17.1°C)	63.5°F (17.5°C)	-0.7°F (-0.4°C)	100th Warmest	Warmest since: 1946	2010
	Ties: 1935, 1978
Feb–Sep 1947 8-Month	58.7°F (14.8°C)	59.8°F (15.4°C)	-1.1°F (-0.6°C)	22nd Coolest	Coolest since: 1940	1907
	58.7°F (14.8°C)	59.8°F (15.4°C)	-1.1°F (-0.6°C)	107th Warmest	Warmest since: 1946	2012
	Ties: 1902, 1928, 1963
Jan–Sep 1947 9-Month	56.6°F (13.7°C)	56.9°F (13.8°C)	-0.3°F (-0.1°C)	45th Coolest	Coolest since: 1941	1940
	56.6°F (13.7°C)	56.9°F (13.8°C)	-0.3°F (-0.1°C)	84th Warmest	Warmest since: 1946	2012
	Ties: 1903, 1908, 1915, 1960, 1981
Dec 1946–Sep 1947 10-Month	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1946	1904
	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1945	2012
	Ties: 1896, 1931, 1950, 1951, 1960, 1977, 1992
Nov 1946–Sep 1947 11-Month	54.3°F (12.4°C)	54.0°F (12.2°C)	0.3°F (0.2°C)	68th Coolest	Coolest since: 1946	1904
	54.3°F (12.4°C)	54.0°F (12.2°C)	0.3°F (0.2°C)	60th Warmest	Warmest since: 1945	2012
	Ties: 1906, 1929, 1943, 2014
Oct 1946–Sep 1947 12-Month	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	77th Coolest	Coolest since: 1946	1904
	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	51st Warmest	Warmest since: 1942	2012
	Ties: 1900, 1937, 1959, 1989, 1997, 2014
Apr 1946–Sep 1947 18-Month	58.4°F (14.7°C)	58.4°F (14.7°C)	0.0°F (0.0°C)	49th Coolest	Coolest since: 1941	1918
	58.4°F (14.7°C)	58.4°F (14.7°C)	0.0°F (0.0°C)	79th Warmest	Warmest since: 1946	2012
	Ties: 1909, 1969, 1993
Oct 1945–Sep 1947 24-Month	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	64th Coolest	Coolest since: 1946	1905
	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	63rd Warmest	Warmest since: 1944	2017
	Ties: 1901, 1944, 1957, 1958
Oct 1944–Sep 1947 36-Month	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1946	1905, 1918
	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	66th Warmest	Warmest since: 1945	2018
	Ties: 1945
Oct 1943–Sep 1947 48-Month	54.3°F (12.4°C)	54.2°F (12.3°C)	0.1°F (0.1°C)	59th Coolest	Coolest since: 1946	1905
	54.3°F (12.4°C)	54.2°F (12.3°C)	0.1°F (0.1°C)	66th Warmest	Warmest since: 1946	2019
	Ties: 1923, 1946, 1958
Oct 1942–Sep 1947 60-Month	54.4°F (12.4°C)	54.1°F (12.3°C)	0.3°F (0.1°C)	67th Coolest	Coolest since: 1944	1908
	54.4°F (12.4°C)	54.1°F (12.3°C)	0.3°F (0.1°C)	57th Warmest	Warmest since: 1946	2020
	Ties: 1923, 1935, 1974

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 24, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings