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 1899

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1899 1-Month	65.4°F (18.6°C)	67.4°F (19.7°C)	-2.0°F (-1.1°C)	16th Coolest	Coolest to Date	1917
	65.4°F (18.6°C)	67.4°F (19.7°C)	-2.0°F (-1.1°C)	113th Warmest	Warmest since: 1898	2018
	Ties: 1908
Aug–Sep 1899 2-Month	69.4°F (20.8°C)	70.6°F (21.4°C)	-1.2°F (-0.6°C)	18th Coolest	Coolest to Date	1927, 1963
	69.4°F (20.8°C)	70.6°F (21.4°C)	-1.2°F (-0.6°C)	111th Warmest	Warmest since: 1898	2018
	Ties: 1956, 1964, 1976, 1992
Jul–Sep 1899 3-Month	71.5°F (21.9°C)	72.2°F (22.3°C)	-0.7°F (-0.4°C)	27th Coolest	Coolest to Date	1909
	71.5°F (21.9°C)	72.2°F (22.3°C)	-0.7°F (-0.4°C)	102nd Warmest	Warmest since: 1898	2016
	Ties: 1905, 1920, 1935, 1937, 1964, 1992
Jun–Sep 1899 4-Month	71.9°F (22.2°C)	71.9°F (22.2°C)	0.0°F (0.0°C)	55th Coolest	Coolest since: 1897	1927
	71.9°F (22.2°C)	71.9°F (22.2°C)	0.0°F (0.0°C)	74th Warmest	Warmest since: 1898	2010
	Ties: 1960, 1978
May–Sep 1899 5-Month	69.9°F (21.1°C)	69.9°F (21.1°C)	0.0°F (0.0°C)	52nd Coolest	Coolest since: 1897	1924, 1927
	69.9°F (21.1°C)	69.9°F (21.1°C)	0.0°F (0.0°C)	77th Warmest	Warmest since: 1898	2010
	Ties: 1914, 1922, 1945, 1947, 1954, 1964
Apr–Sep 1899 6-Month	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	46th Coolest	Coolest since: 1897	1907
	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	83rd Warmest	Warmest since: 1898	2010
	Ties: 1908, 1913, 1915, 1951, 1961, 1965
Mar–Sep 1899 7-Month	63.1°F (17.3°C)	63.5°F (17.5°C)	-0.4°F (-0.2°C)	38th Coolest	Coolest since: 1897	1924
	63.1°F (17.3°C)	63.5°F (17.5°C)	-0.4°F (-0.2°C)	91st Warmest	Warmest since: 1898	2010
	Ties: 1895, 1902, 1903
Feb–Sep 1899 8-Month	58.6°F (14.8°C)	59.8°F (15.4°C)	-1.2°F (-0.6°C)	18th Coolest	Coolest since: 1895	1907
	58.6°F (14.8°C)	59.8°F (15.4°C)	-1.2°F (-0.6°C)	111th Warmest	Warmest since: 1898	2012
	Ties: 1912, 1927, 1972
Jan–Sep 1899 9-Month	55.6°F (13.1°C)	56.9°F (13.8°C)	-1.3°F (-0.7°C)	17th Coolest	Coolest since: 1895	1940
	55.6°F (13.1°C)	56.9°F (13.8°C)	-1.3°F (-0.7°C)	112th Warmest	Warmest since: 1898	2012
	Ties: 1963
Dec 1898–Sep 1899 10-Month	53.7°F (12.1°C)	54.8°F (12.7°C)	-1.1°F (-0.6°C)	20th Coolest	Coolest since: 1897	1904
	53.7°F (12.1°C)	54.8°F (12.7°C)	-1.1°F (-0.6°C)	108th Warmest	Warmest since: 1898	2012
	Ties: 1897, 1958
Nov 1898–Sep 1899 11-Month	52.7°F (11.5°C)	54.0°F (12.2°C)	-1.3°F (-0.7°C)	15th Coolest	Coolest to Date	1904
	52.7°F (11.5°C)	54.0°F (12.2°C)	-1.3°F (-0.7°C)	113th Warmest	Warmest since: 1898	2012
	Ties: 1916, 1924, 1982
Oct 1898–Sep 1899 12-Month	53.1°F (11.7°C)	54.2°F (12.3°C)	-1.1°F (-0.6°C)	19th Coolest	Coolest to Date	1904
	53.1°F (11.7°C)	54.2°F (12.3°C)	-1.1°F (-0.6°C)	109th Warmest	Warmest since: 1898	2012
	Ties: 1934, 1958, 1970
Apr 1898–Sep 1899 18-Month	57.8°F (14.3°C)	58.4°F (14.7°C)	-0.6°F (-0.4°C)	23rd Coolest	Coolest to Date	1918
Apr 1898–Sep 1899 18-Month	57.8°F (14.3°C)	58.4°F (14.7°C)	-0.6°F (-0.4°C)	105th Warmest	Warmest since: 1898	2012
Oct 1897–Sep 1899 24-Month	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	46th Coolest	Coolest since: 1897	1905
	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	81st Warmest	Warmest since: 1898	2017
	Ties: 1913, 1956
Oct 1896–Sep 1899 36-Month	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	33rd Coolest	Coolest to Date	1905, 1918
	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	93rd Warmest	Warmest since: 1898	2018
	Ties: 1910, 1911, 1937, 1940, 1962, 1980, 1982
Oct 1895–Sep 1899 48-Month	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	33rd Coolest	Coolest to Date	1905
	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	92nd Warmest	Warmest to Date	2019
	Ties: 1913, 1936, 1943, 1979

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings