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 1915

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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 1915 1-Month	69.0°F (20.6°C)	67.4°F (19.7°C)	1.6°F (0.9°C)	93rd Coolest	Coolest since: 1914	1917
	69.0°F (20.6°C)	67.4°F (19.7°C)	1.6°F (0.9°C)	36th Warmest	Warmest since: 1906	2018
	Ties: 1965
Aug–Sep 1915 2-Month	70.9°F (21.6°C)	70.6°F (21.4°C)	0.3°F (0.2°C)	62nd Coolest	Coolest since: 1914	1927, 1963
	70.9°F (21.6°C)	70.6°F (21.4°C)	0.3°F (0.2°C)	67th Warmest	Warmest since: 1911	2018
	Ties: 1979, 2014
Jul–Sep 1915 3-Month	72.1°F (22.3°C)	72.2°F (22.3°C)	-0.1°F (0.0°C)	48th Coolest	Coolest since: 1914	1909
	72.1°F (22.3°C)	72.2°F (22.3°C)	-0.1°F (0.0°C)	81st Warmest	Warmest since: 1911	2016
	Ties: 1896, 1910, 1951, 1958, 1965
Jun–Sep 1915 4-Month	71.1°F (21.7°C)	71.9°F (22.2°C)	-0.8°F (-0.5°C)	27th Coolest	Coolest since: 1912	1927
	71.1°F (21.7°C)	71.9°F (22.2°C)	-0.8°F (-0.5°C)	102nd Warmest	Warmest since: 1914	2010
	Ties: 1905, 1919, 1920, 1926, 1928, 1929, 1958
May–Sep 1915 5-Month	69.0°F (20.6°C)	69.9°F (21.1°C)	-0.9°F (-0.5°C)	20th Coolest	Coolest since: 1910	1924, 1927
	69.0°F (20.6°C)	69.9°F (21.1°C)	-0.9°F (-0.5°C)	109th Warmest	Warmest since: 1914	2010
	Ties: 1904, 1926, 1962, 1974
Apr–Sep 1915 6-Month	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	46th Coolest	Coolest since: 1914	1907
	66.8°F (19.3°C)	66.9°F (19.4°C)	-0.1°F (-0.1°C)	83rd Warmest	Warmest since: 1913	2010
	Ties: 1899, 1908, 1913, 1951, 1961, 1965
Mar–Sep 1915 7-Month	62.4°F (16.9°C)	63.5°F (17.5°C)	-1.1°F (-0.6°C)	17th Coolest	Coolest since: 1914	1924
	62.4°F (16.9°C)	63.5°F (17.5°C)	-1.1°F (-0.6°C)	112th Warmest	Warmest since: 1914	2010
	Ties: 1914, 1984
Feb–Sep 1915 8-Month	59.3°F (15.2°C)	59.8°F (15.4°C)	-0.5°F (-0.2°C)	35th Coolest	Coolest since: 1914	1907
	59.3°F (15.2°C)	59.8°F (15.4°C)	-0.5°F (-0.2°C)	94th Warmest	Warmest since: 1913	2012
	Ties: 1937, 1941, 1960
Jan–Sep 1915 9-Month	56.6°F (13.7°C)	56.9°F (13.8°C)	-0.3°F (-0.1°C)	45th Coolest	Coolest since: 1914	1940
	56.6°F (13.7°C)	56.9°F (13.8°C)	-0.3°F (-0.1°C)	84th Warmest	Warmest since: 1913	2012
	Ties: 1903, 1908, 1947, 1960, 1981
Dec 1914–Sep 1915 10-Month	54.2°F (12.3°C)	54.8°F (12.7°C)	-0.6°F (-0.4°C)	36th Coolest	Coolest since: 1914	1904
	54.2°F (12.3°C)	54.8°F (12.7°C)	-0.6°F (-0.4°C)	92nd Warmest	Warmest since: 1913	2012
	Ties: 1923, 1966, 1996
Nov 1914–Sep 1915 11-Month	53.3°F (11.8°C)	54.0°F (12.2°C)	-0.7°F (-0.4°C)	29th Coolest	Coolest since: 1912	1904
	53.3°F (11.8°C)	54.0°F (12.2°C)	-0.7°F (-0.4°C)	99th Warmest	Warmest since: 1914	2012
	Ties: 1935, 1962
Oct 1914–Sep 1915 12-Month	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	40th Coolest	Coolest since: 1914	1904
	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	88th Warmest	Warmest since: 1913	2012
	Ties: 1896, 1923, 1965, 1984
Apr 1914–Sep 1915 18-Month	58.1°F (14.5°C)	58.4°F (14.7°C)	-0.3°F (-0.2°C)	35th Coolest	Coolest since: 1914	1918
	58.1°F (14.5°C)	58.4°F (14.7°C)	-0.3°F (-0.2°C)	93rd Warmest	Warmest since: 1914	2012
	Ties: 1897, 1914, 1925, 1935, 1948, 1961
Oct 1913–Sep 1915 24-Month	53.7°F (12.1°C)	54.2°F (12.3°C)	-0.5°F (-0.2°C)	33rd Coolest	Coolest since: 1912	1905
	53.7°F (12.1°C)	54.2°F (12.3°C)	-0.5°F (-0.2°C)	94th Warmest	Warmest since: 1914	2017
	Ties: 1920, 1926, 1969
Oct 1912–Sep 1915 36-Month	54.3°F (12.4°C)	54.2°F (12.3°C)	0.1°F (0.1°C)	58th Coolest	Coolest since: 1914	1905, 1918
	54.3°F (12.4°C)	54.2°F (12.3°C)	0.1°F (0.1°C)	68th Warmest	Warmest since: 1900	2018
	Ties: 1900
Oct 1911–Sep 1915 48-Month	53.9°F (12.2°C)	54.2°F (12.3°C)	-0.3°F (-0.1°C)	38th Coolest	Coolest since: 1914	1905
	53.9°F (12.2°C)	54.2°F (12.3°C)	-0.3°F (-0.1°C)	87th Warmest	Warmest since: 1914	2019
	Ties: 1903, 1914, 1921, 1925, 1938, 1961, 1972, 1984
Oct 1910–Sep 1915 60-Month	53.8°F (12.1°C)	54.1°F (12.3°C)	-0.3°F (-0.2°C)	33rd Coolest	Coolest since: 1914	1908
	53.8°F (12.1°C)	54.1°F (12.3°C)	-0.3°F (-0.2°C)	91st Warmest	Warmest since: 1914	2020
	Ties: 1914, 1938, 1962, 1972

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