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 1940

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Record Warmest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Warmest/Coolest Since	Record
September 1940 1-Month	64.4°F (18.0°C)	67.4°F (19.7°C)	-3.0°F (-1.7°C)	10th Coolest	Coolest since: 1937	1917
September 1940 1-Month	64.4°F (18.0°C)	67.4°F (19.7°C)	-3.0°F (-1.7°C)	119th Warmest	Warmest since: 1939	2018
Aug–Sep 1940 2-Month	68.1°F (20.1°C)	70.6°F (21.4°C)	-2.5°F (-1.3°C)	3rd Coolest	Coolest since: 1927	1927, 1963
	68.1°F (20.1°C)	70.6°F (21.4°C)	-2.5°F (-1.3°C)	126th Warmest	Warmest since: 1939	2018
	Ties: 1917
Jul–Sep 1940 3-Month	70.4°F (21.3°C)	72.2°F (22.3°C)	-1.8°F (-1.0°C)	8th Coolest	Coolest since: 1927	1909
	70.4°F (21.3°C)	72.2°F (22.3°C)	-1.8°F (-1.0°C)	121st Warmest	Warmest since: 1939	2016
	Ties: 1917, 1946
Jun–Sep 1940 4-Month	70.6°F (21.4°C)	71.9°F (22.2°C)	-1.3°F (-0.8°C)	15th Coolest	Coolest since: 1927	1927
	70.6°F (21.4°C)	71.9°F (22.2°C)	-1.3°F (-0.8°C)	114th Warmest	Warmest since: 1939	2010
	Ties: 1897, 1916
May–Sep 1940 5-Month	68.7°F (20.4°C)	69.9°F (21.1°C)	-1.2°F (-0.7°C)	14th Coolest	Coolest since: 1935	1924, 1927
	68.7°F (20.4°C)	69.9°F (21.1°C)	-1.2°F (-0.7°C)	115th Warmest	Warmest since: 1939	2010
	Ties: 1935
Apr–Sep 1940 6-Month	65.0°F (18.3°C)	66.9°F (19.4°C)	-1.9°F (-1.1°C)	5th Coolest	Coolest since: 1927	1907
	65.0°F (18.3°C)	66.9°F (19.4°C)	-1.9°F (-1.1°C)	124th Warmest	Warmest since: 1939	2010
	Ties: 1950
Mar–Sep 1940 7-Month	61.1°F (16.2°C)	63.5°F (17.5°C)	-2.4°F (-1.3°C)	2nd Coolest	Coolest since: 1924	1924
	61.1°F (16.2°C)	63.5°F (17.5°C)	-2.4°F (-1.3°C)	127th Warmest	Warmest since: 1939	2010
	Ties: 1907
Feb–Sep 1940 8-Month	57.6°F (14.2°C)	59.8°F (15.4°C)	-2.2°F (-1.2°C)	4th Coolest	Coolest since: 1924	1907
	57.6°F (14.2°C)	59.8°F (15.4°C)	-2.2°F (-1.2°C)	125th Warmest	Warmest since: 1939	2012
	Ties: 1967
Jan–Sep 1940 9-Month	53.6°F (12.0°C)	56.9°F (13.8°C)	-3.3°F (-1.8°C)	1st Coolest	Coolest to Date	1940
Jan–Sep 1940 9-Month	53.6°F (12.0°C)	56.9°F (13.8°C)	-3.3°F (-1.8°C)	128th Warmest	Warmest since: 1939	2012
Dec 1939–Sep 1940 10-Month	52.0°F (11.1°C)	54.8°F (12.7°C)	-2.8°F (-1.6°C)	2nd Coolest	Coolest since: 1904	1904
Dec 1939–Sep 1940 10-Month	52.0°F (11.1°C)	54.8°F (12.7°C)	-2.8°F (-1.6°C)	126th Warmest	Warmest since: 1939	2012
Nov 1939–Sep 1940 11-Month	51.1°F (10.6°C)	54.0°F (12.2°C)	-2.9°F (-1.6°C)	2nd Coolest	Coolest since: 1904	1904
Nov 1939–Sep 1940 11-Month	51.1°F (10.6°C)	54.0°F (12.2°C)	-2.9°F (-1.6°C)	126th Warmest	Warmest since: 1939	2012
Oct 1939–Sep 1940 12-Month	51.5°F (10.8°C)	54.2°F (12.3°C)	-2.7°F (-1.5°C)	2nd Coolest	Coolest since: 1918	1904
	51.5°F (10.8°C)	54.2°F (12.3°C)	-2.7°F (-1.5°C)	126th Warmest	Warmest since: 1939	2012
	Ties: 1918
Apr 1939–Sep 1940 18-Month	56.9°F (13.8°C)	58.4°F (14.7°C)	-1.5°F (-0.9°C)	4th Coolest	Coolest since: 1918	1918
Apr 1939–Sep 1940 18-Month	56.9°F (13.8°C)	58.4°F (14.7°C)	-1.5°F (-0.9°C)	124th Warmest	Warmest since: 1939	2012
Oct 1938–Sep 1940 24-Month	53.4°F (11.9°C)	54.2°F (12.3°C)	-0.8°F (-0.4°C)	24th Coolest	Coolest since: 1936	1905
	53.4°F (11.9°C)	54.2°F (12.3°C)	-0.8°F (-0.4°C)	103rd Warmest	Warmest since: 1939	2017
	Ties: 1907, 1916
Oct 1937–Sep 1940 36-Month	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	33rd Coolest	Coolest since: 1937	1905, 1918
	53.8°F (12.1°C)	54.2°F (12.3°C)	-0.4°F (-0.2°C)	93rd Warmest	Warmest since: 1939	2018
	Ties: 1899, 1910, 1911, 1937, 1962, 1980, 1982
Oct 1936–Sep 1940 48-Month	54.0°F (12.2°C)	54.2°F (12.3°C)	-0.2°F (-0.1°C)	47th Coolest	Coolest since: 1938	1905
	54.0°F (12.2°C)	54.2°F (12.3°C)	-0.2°F (-0.1°C)	78th Warmest	Warmest since: 1939	2019
	Ties: 1900, 1916, 1942, 1962
Oct 1935–Sep 1940 60-Month	53.9°F (12.2°C)	54.1°F (12.3°C)	-0.2°F (-0.1°C)	38th Coolest	Coolest since: 1938	1908
	53.9°F (12.2°C)	54.1°F (12.3°C)	-0.2°F (-0.1°C)	86th Warmest	Warmest since: 1939	2020
	Ties: 1902, 1913, 1937, 1941, 1944

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings