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 1901

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1901 1-Month	67.4°F (19.7°C)	67.4°F (19.7°C)	0.0°F (0.0°C)	58th Coolest	Coolest since: 1899	1917
	67.4°F (19.7°C)	67.4°F (19.7°C)	0.0°F (0.0°C)	71st Warmest	Warmest since: 1900	2018
	Ties: 1986
Aug–Sep 1901 2-Month	71.6°F (22.0°C)	70.6°F (21.4°C)	1.0°F (0.6°C)	84th Coolest	Coolest since: 1899	1927, 1963
	71.6°F (22.0°C)	70.6°F (21.4°C)	1.0°F (0.6°C)	45th Warmest	Warmest since: 1900	2018
	Ties: 1960, 1988, 2001
Jul–Sep 1901 3-Month	74.0°F (23.3°C)	72.2°F (22.3°C)	1.8°F (1.0°C)	102nd Coolest	Coolest since: 1899	1909
	74.0°F (23.3°C)	72.2°F (22.3°C)	1.8°F (1.0°C)	27th Warmest	Warmest since: 1900	2016
	Ties: 1959, 1961, 2003
Jun–Sep 1901 4-Month	73.3°F (22.9°C)	71.9°F (22.2°C)	1.4°F (0.7°C)	100th Coolest	Coolest since: 1899	1927
	73.3°F (22.9°C)	71.9°F (22.2°C)	1.4°F (0.7°C)	29th Warmest	Warmest since: 1900	2010
	Ties: 1921, 1925
May–Sep 1901 5-Month	70.7°F (21.5°C)	69.9°F (21.1°C)	0.8°F (0.4°C)	80th Coolest	Coolest since: 1899	1924, 1927
	70.7°F (21.5°C)	69.9°F (21.1°C)	0.8°F (0.4°C)	49th Warmest	Warmest since: 1900	2010
	Ties: 1921, 1936, 1952, 1983, 1989, 2009
Apr–Sep 1901 6-Month	67.0°F (19.4°C)	66.9°F (19.4°C)	0.1°F (0.0°C)	54th Coolest	Coolest since: 1899	1907
	67.0°F (19.4°C)	66.9°F (19.4°C)	0.1°F (0.0°C)	75th Warmest	Warmest since: 1900	2010
	Ties: 1895, 1922, 1938, 1976, 2000
Mar–Sep 1901 7-Month	63.6°F (17.6°C)	63.5°F (17.5°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1899	1924
	63.6°F (17.6°C)	63.5°F (17.5°C)	0.1°F (0.1°C)	71st Warmest	Warmest since: 1900	2010
	Ties: 1931, 1934, 1948, 1961
Feb–Sep 1901 8-Month	59.0°F (15.0°C)	59.8°F (15.4°C)	-0.8°F (-0.4°C)	28th Coolest	Coolest since: 1899	1907
	59.0°F (15.0°C)	59.8°F (15.4°C)	-0.8°F (-0.4°C)	101st Warmest	Warmest since: 1900	2012
	Ties: 1935, 1992
Jan–Sep 1901 9-Month	56.1°F (13.4°C)	56.8°F (13.8°C)	-0.7°F (-0.4°C)	31st Coolest	Coolest since: 1899	1940
	56.1°F (13.4°C)	56.8°F (13.8°C)	-0.7°F (-0.4°C)	98th Warmest	Warmest since: 1900	2012
	Ties: 1970, 1972
Dec 1900–Sep 1901 10-Month	54.0°F (12.2°C)	54.8°F (12.7°C)	-0.8°F (-0.5°C)	28th Coolest	Coolest since: 1899	1904
	54.0°F (12.2°C)	54.8°F (12.7°C)	-0.8°F (-0.5°C)	100th Warmest	Warmest since: 1900	2012
	Ties: 1914, 1934, 1964, 1971, 1979
Nov 1900–Sep 1901 11-Month	53.5°F (11.9°C)	54.0°F (12.2°C)	-0.5°F (-0.3°C)	40th Coolest	Coolest since: 1899	1904
	53.5°F (11.9°C)	54.0°F (12.2°C)	-0.5°F (-0.3°C)	88th Warmest	Warmest since: 1900	2012
	Ties: 1964, 1977
Oct 1900–Sep 1901 12-Month	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	50th Coolest	Coolest since: 1899	1904
	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	78th Warmest	Warmest since: 1900	2012
	Ties: 1922, 1946, 2003
Apr 1900–Sep 1901 18-Month	59.0°F (15.0°C)	58.4°F (14.7°C)	0.6°F (0.3°C)	80th Coolest	Coolest since: 1900	1904, 1918
	59.0°F (15.0°C)	58.4°F (14.7°C)	0.6°F (0.3°C)	48th Warmest	Warmest to Date	2012
	Ties: 1933, 1950, 1983, 1989
Oct 1899–Sep 1901 24-Month	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	60th Coolest	Coolest since: 1900	1905
	54.4°F (12.4°C)	54.2°F (12.3°C)	0.2°F (0.1°C)	67th Warmest	Warmest to Date	2017
	Ties: 1944, 1947, 1957, 1958
Oct 1898–Sep 1901 36-Month	54.0°F (12.2°C)	54.2°F (12.3°C)	-0.2°F (-0.1°C)	47th Coolest	Coolest since: 1899	1905, 1918
	54.0°F (12.2°C)	54.2°F (12.3°C)	-0.2°F (-0.1°C)	79th Warmest	Warmest since: 1900	2018
	Ties: 1914, 1958, 1984
Oct 1897–Sep 1901 48-Month	54.2°F (12.3°C)	54.1°F (12.3°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1900	1905
	54.2°F (12.3°C)	54.1°F (12.3°C)	0.1°F (0.0°C)	70th Warmest	Warmest to Date	2019
	Ties: 1948, 1973, 1983
Oct 1896–Sep 1901 60-Month	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	48th Coolest	Coolest since: 1900	1908
	54.1°F (12.3°C)	54.2°F (12.3°C)	-0.1°F (0.0°C)	76th Warmest	Warmest to Date	2020
	Ties: 1931, 1942, 1943, 1973, 1980, 1983, 1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings