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 1951

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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 1951 1-Month	67.0°F (19.4°C)	67.4°F (19.7°C)	-0.4°F (-0.3°C)	45th Coolest	Coolest since: 1950	1917
	67.0°F (19.4°C)	67.4°F (19.7°C)	-0.4°F (-0.3°C)	84th Warmest	Warmest since: 1947	2018
	Ties: 1905, 1927, 1952, 1991
Aug–Sep 1951 2-Month	70.3°F (21.3°C)	70.6°F (21.4°C)	-0.3°F (-0.1°C)	49th Coolest	Coolest since: 1950	1927, 1963
	70.3°F (21.3°C)	70.6°F (21.4°C)	-0.3°F (-0.1°C)	80th Warmest	Warmest since: 1947	2018
	Ties: 1910, 1912
Jul–Sep 1951 3-Month	72.1°F (22.3°C)	72.2°F (22.3°C)	-0.1°F (0.0°C)	48th Coolest	Coolest since: 1950	1909
	72.1°F (22.3°C)	72.2°F (22.3°C)	-0.1°F (0.0°C)	81st Warmest	Warmest since: 1949	2016
	Ties: 1896, 1910, 1915, 1958, 1965
Jun–Sep 1951 4-Month	71.7°F (22.1°C)	71.9°F (22.2°C)	-0.2°F (-0.1°C)	49th Coolest	Coolest since: 1950	1927
	71.7°F (22.1°C)	71.9°F (22.2°C)	-0.2°F (-0.1°C)	80th Warmest	Warmest since: 1949	2010
	Ties: 1947, 1975, 1984
May–Sep 1951 5-Month	69.7°F (20.9°C)	69.9°F (21.1°C)	-0.2°F (-0.2°C)	47th Coolest	Coolest since: 1950	1924, 1927
	69.7°F (20.9°C)	69.9°F (21.1°C)	-0.2°F (-0.2°C)	82nd Warmest	Warmest since: 1949	2010
	Ties: 1960, 1996
Apr–Sep 1951 6-Month	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	46th Coolest	Coolest since: 1950	1907
	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	83rd Warmest	Warmest since: 1949	2010
	Ties: 1899, 1908, 1913, 1915, 1961, 1965
Mar–Sep 1951 7-Month	63.3°F (17.4°C)	63.5°F (17.5°C)	-0.2°F (-0.1°C)	44th Coolest	Coolest since: 1950	1924
	63.3°F (17.4°C)	63.5°F (17.5°C)	-0.2°F (-0.1°C)	85th Warmest	Warmest since: 1949	2010
	Ties: 1918, 1941, 1964
Feb–Sep 1951 8-Month	59.9°F (15.5°C)	59.8°F (15.4°C)	0.1°F (0.1°C)	57th Coolest	Coolest since: 1950	1907
	59.9°F (15.5°C)	59.8°F (15.4°C)	0.1°F (0.1°C)	72nd Warmest	Warmest since: 1949	2012
	Ties: 1919, 1948, 1970
Jan–Sep 1951 9-Month	57.3°F (14.1°C)	56.9°F (13.8°C)	0.4°F (0.3°C)	64th Coolest	Coolest since: 1950	1940
	57.3°F (14.1°C)	56.9°F (13.8°C)	0.4°F (0.3°C)	65th Warmest	Warmest since: 1949	2012
	Ties: 1911, 1931, 1946
Dec 1950–Sep 1951 10-Month	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1950	1904
	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1950	2012
	Ties: 1896, 1931, 1947, 1950, 1960, 1977, 1992
Nov 1950–Sep 1951 11-Month	54.1°F (12.3°C)	54.0°F (12.2°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1950	1904
	54.1°F (12.3°C)	54.0°F (12.2°C)	0.1°F (0.1°C)	70th Warmest	Warmest since: 1949	2012
	Ties: 1896, 1992, 1994, 2001
Oct 1950–Sep 1951 12-Month	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	64th Coolest	Coolest since: 1948	1904
	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	64th Warmest	Warmest since: 1950	2012
	Ties: 1960, 1975
Apr 1950–Sep 1951 18-Month	58.0°F (14.4°C)	58.4°F (14.7°C)	-0.4°F (-0.3°C)	31st Coolest	Coolest since: 1941	1918
	58.0°F (14.4°C)	58.4°F (14.7°C)	-0.4°F (-0.3°C)	97th Warmest	Warmest since: 1950	2012
	Ties: 1934, 1962, 1965
Oct 1949–Sep 1951 24-Month	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	67th Coolest	Coolest since: 1948	1905
	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	60th Warmest	Warmest since: 1950	2017
	Ties: 1931, 1938
Oct 1948–Sep 1951 36-Month	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	94th Coolest	Coolest since: 1950	1905, 1918
	55.1°F (12.8°C)	54.2°F (12.3°C)	0.9°F (0.5°C)	32nd Warmest	Warmest since: 1933	2018
	Ties: 1932, 1953, 1976, 1995, 1998
Oct 1947–Sep 1951 48-Month	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	79th Coolest	Coolest since: 1949	1905
	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	46th Warmest	Warmest since: 1950	2019
	Ties: 1945, 1949, 1956, 1974, 1977, 1996, 1997
Oct 1946–Sep 1951 60-Month	54.7°F (12.6°C)	54.1°F (12.3°C)	0.6°F (0.3°C)	79th Coolest	Coolest since: 1950	1908
	54.7°F (12.6°C)	54.1°F (12.3°C)	0.6°F (0.3°C)	45th Warmest	Warmest since: 1934	2020
	Ties: 1934, 1996, 1997

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings