Statewide Rankings

Statewide Data Info
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 2009

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2009
1-Month		66.9°F
(19.4°C)		67.4°F
(19.7°C)		-0.5°F
(-0.3°C)		44th Coolest
Coolest since:
1917
85th Warmest
Warmest since:
2018
Aug–Sep 2009
2-Month		72.1°F
(22.3°C)		70.6°F
(21.4°C)		1.5°F
(0.9°C)		96th Coolest
Coolest since:
1927, 1963
33rd Warmest
Warmest since:
2018
Ties: 1939
Jul–Sep 2009
3-Month		72.9°F
(22.7°C)		72.2°F
(22.3°C)		0.7°F
(0.4°C)		81st Coolest
Coolest since:
1909
48th Warmest
Warmest since:
2016
Ties: 1944
Jun–Sep 2009
4-Month		72.4°F
(22.4°C)		71.9°F
(22.2°C)		0.5°F
(0.2°C)		71st Coolest
Coolest since:
1927
58th Warmest
Warmest since:
2010
Ties: 1936, 1942, 1945, 2001
May–Sep 2009
5-Month		70.7°F
(21.5°C)		69.9°F
(21.1°C)		0.8°F
(0.4°C)		80th Coolest
Coolest since:
1924, 1927
49th Warmest
Warmest since:
2010
Ties: 1901, 1921, 1936, 1952, 1983, 1989
Apr–Sep 2009
6-Month		68.1°F
(20.1°C)		66.9°F
(19.4°C)		1.2°F
(0.7°C)		96th Coolest
Coolest since:
1907
33rd Warmest
Warmest since:
2010
Ties: 1930
Mar–Sep 2009
7-Month		64.5°F
(18.1°C)		63.5°F
(17.5°C)		1.0°F
(0.6°C)		95th Coolest
Coolest since:
1924
34th Warmest
Warmest since:
2010
Ties: 2013
Feb–Sep 2009
8-Month		61.3°F
(16.3°C)		59.8°F
(15.4°C)		1.5°F
(0.9°C)		102nd Coolest
Coolest since:
1907
27th Warmest
Warmest since:
2012
Ties: 1953, 1955, 2000
Jan–Sep 2009
9-Month		57.9°F
(14.4°C)		56.9°F
(13.8°C)		1.0°F
(0.6°C)		91st Coolest
Coolest since:
1940
38th Warmest
Warmest since:
2012
Ties: 1898, 1932, 1976, 1989
Dec 2008–Sep 2009
10-Month		56.2°F
(13.4°C)		54.8°F
(12.7°C)		1.4°F
(0.7°C)		96th Coolest
Coolest since:
1904
32nd Warmest
Warmest since:
2012
Ties: 1954, 1983, 1985
Nov 2008–Sep 2009
11-Month		55.2°F
(12.9°C)		54.0°F
(12.2°C)		1.2°F
(0.7°C)		95th Coolest
Coolest since:
1904
33rd Warmest
Warmest since:
2012
Ties: 1930, 1954, 1985
Oct 2008–Sep 2009
12-Month		55.3°F
(12.9°C)		54.2°F
(12.3°C)		1.1°F
(0.6°C)		92nd Coolest
Coolest since:
1904
36th Warmest
Warmest since:
2012
Ties: 1933, 1939, 1990, 2015
Apr 2008–Sep 2009
18-Month		59.7°F
(15.4°C)		58.4°F
(14.7°C)		1.3°F
(0.7°C)		105th Coolest
Coolest since:
1918
23rd Warmest
Warmest since:
2012
Ties: 1949, 2004
Oct 2007–Sep 2009
24-Month		56.1°F
(13.4°C)		54.2°F
(12.3°C)		1.9°F
(1.1°C)		107th Coolest
Coolest since:
1905
20th Warmest
Warmest since:
2017
Oct 2006–Sep 2009
36-Month		56.2°F
(13.4°C)		54.2°F
(12.3°C)		2.0°F
(1.1°C)		111th Coolest
Coolest since:
1905, 1918
15th Warmest
Warmest since:
2018
Ties: 2002
Oct 2005–Sep 2009
48-Month		56.3°F
(13.5°C)		54.2°F
(12.3°C)		2.1°F
(1.2°C)		112th Coolest
Coolest since:
1905
13th Warmest
Warmest since:
2019
Ties: 2002
Oct 2004–Sep 2009
60-Month		56.2°F
(13.4°C)		54.1°F
(12.3°C)		2.1°F
(1.1°C)		109th Coolest
Coolest since:
1908
15th Warmest
Warmest since:
2020
Ties: 2006, 2015

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