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 1977

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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 1977 1-Month	70.0°F (21.1°C)	67.4°F (19.7°C)	2.6°F (1.4°C)	106th Coolest	Coolest since: 1976	1917
	70.0°F (21.1°C)	67.4°F (19.7°C)	2.6°F (1.4°C)	23rd Warmest	Warmest since: 1970	2018
	Ties: 2007
Aug–Sep 1977 2-Month	73.0°F (22.8°C)	70.6°F (21.4°C)	2.4°F (1.4°C)	109th Coolest	Coolest since: 1976	1927, 1963
	73.0°F (22.8°C)	70.6°F (21.4°C)	2.4°F (1.4°C)	20th Warmest	Warmest since: 1961	2018
	Ties: 1898, 2020
Jul–Sep 1977 3-Month	74.2°F (23.4°C)	72.2°F (22.3°C)	2.0°F (1.1°C)	110th Coolest	Coolest since: 1976	1909
	74.2°F (23.4°C)	72.2°F (22.3°C)	2.0°F (1.1°C)	19th Warmest	Warmest since: 1955	2016
	Ties: 1930, 1993, 1995, 2007
Jun–Sep 1977 4-Month	72.8°F (22.7°C)	71.9°F (22.2°C)	0.9°F (0.5°C)	83rd Coolest	Coolest since: 1976	1927
	72.8°F (22.7°C)	71.9°F (22.2°C)	0.9°F (0.5°C)	46th Warmest	Warmest since: 1973	2010
	Ties: 1939, 1970
May–Sep 1977 5-Month	71.1°F (21.7°C)	69.9°F (21.1°C)	1.2°F (0.6°C)	96th Coolest	Coolest since: 1976	1924, 1927
	71.1°F (21.7°C)	69.9°F (21.1°C)	1.2°F (0.6°C)	33rd Warmest	Warmest since: 1959	2010
	Ties: 1931, 1933, 1942, 1957, 1995
Apr–Sep 1977 6-Month	68.5°F (20.3°C)	66.9°F (19.4°C)	1.6°F (0.9°C)	105th Coolest	Coolest since: 1976	1907
	68.5°F (20.3°C)	66.9°F (19.4°C)	1.6°F (0.9°C)	24th Warmest	Warmest since: 1959	2010
	Ties: 1921, 1955, 2007, 2013
Mar–Sep 1977 7-Month	65.6°F (18.7°C)	63.5°F (17.5°C)	2.1°F (1.2°C)	113th Coolest	Coolest since: 1976	1924
	65.6°F (18.7°C)	63.5°F (17.5°C)	2.1°F (1.2°C)	16th Warmest	Warmest since: 1921	2010
	Ties: 1998
Feb–Sep 1977 8-Month	61.8°F (16.6°C)	59.8°F (15.4°C)	2.0°F (1.2°C)	111th Coolest	Coolest since: 1976	1907
Feb–Sep 1977 8-Month	61.8°F (16.6°C)	59.8°F (15.4°C)	2.0°F (1.2°C)	18th Warmest	Warmest since: 1921	2012
Jan–Sep 1977 9-Month	57.4°F (14.1°C)	56.9°F (13.8°C)	0.5°F (0.3°C)	73rd Coolest	Coolest since: 1975	1940
	57.4°F (14.1°C)	56.9°F (13.8°C)	0.5°F (0.3°C)	56th Warmest	Warmest since: 1976	2012
	Ties: 1906, 1937, 1942, 1974, 1980
Dec 1976–Sep 1977 10-Month	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	55th Coolest	Coolest since: 1972	1904
	54.9°F (12.7°C)	54.8°F (12.7°C)	0.1°F (0.0°C)	73rd Warmest	Warmest since: 1976	2012
	Ties: 1896, 1931, 1947, 1950, 1951, 1960, 1992
Nov 1976–Sep 1977 11-Month	53.5°F (11.9°C)	54.0°F (12.2°C)	-0.5°F (-0.3°C)	40th Coolest	Coolest since: 1971	1904
	53.5°F (11.9°C)	54.0°F (12.2°C)	-0.5°F (-0.3°C)	88th Warmest	Warmest since: 1976	2012
	Ties: 1901, 1964
Oct 1976–Sep 1977 12-Month	53.4°F (11.9°C)	54.2°F (12.3°C)	-0.8°F (-0.4°C)	27th Coolest	Coolest since: 1970	1904
	53.4°F (11.9°C)	54.2°F (12.3°C)	-0.8°F (-0.4°C)	101st Warmest	Warmest since: 1976	2012
	Ties: 1961, 1966
Apr 1976–Sep 1977 18-Month	57.9°F (14.4°C)	58.4°F (14.7°C)	-0.5°F (-0.3°C)	24th Coolest	Coolest since: 1970	1918
	57.9°F (14.4°C)	58.4°F (14.7°C)	-0.5°F (-0.3°C)	104th Warmest	Warmest since: 1976	2012
	Ties: 1911, 1964, 1966, 1970, 1978, 1979
Oct 1975–Sep 1977 24-Month	54.6°F (12.6°C)	54.2°F (12.3°C)	0.4°F (0.3°C)	73rd Coolest	Coolest since: 1972	1905
	54.6°F (12.6°C)	54.2°F (12.3°C)	0.4°F (0.3°C)	54th Warmest	Warmest since: 1976	2017
	Ties: 1914, 1942, 1960, 1989, 1994
Oct 1974–Sep 1977 36-Month	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	69th Coolest	Coolest since: 1973	1905, 1918
	54.5°F (12.5°C)	54.2°F (12.3°C)	0.3°F (0.2°C)	57th Warmest	Warmest since: 1976	2018
	Ties: 1922, 1930, 1931, 1956, 1959, 1973, 1994
Oct 1973–Sep 1977 48-Month	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	79th Coolest	Coolest since: 1974	1905
	54.7°F (12.6°C)	54.2°F (12.3°C)	0.5°F (0.3°C)	46th Warmest	Warmest since: 1976	2019
	Ties: 1945, 1949, 1951, 1956, 1974, 1996, 1997
Oct 1972–Sep 1977 60-Month	54.8°F (12.7°C)	54.1°F (12.3°C)	0.7°F (0.4°C)	81st Coolest	Coolest since: 1975	1908
	54.8°F (12.7°C)	54.1°F (12.3°C)	0.7°F (0.4°C)	43rd Warmest	Warmest since: 1976	2020
	Ties: 1932

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on June 7, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings