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 2015

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 2015
1-Month		72.0°F
(22.2°C)		67.4°F
(19.7°C)		4.6°F
(2.5°C)		124th Coolest
Coolest since:
1917
5th Warmest
Warmest since:
2018
Ties: 1931, 2016
Aug–Sep 2015
2-Month		73.6°F
(23.1°C)		70.6°F
(21.4°C)		3.0°F
(1.7°C)		120th Coolest
Coolest since:
1927, 1963
9th Warmest
Warmest since:
2018
Ties: 2022
Jul–Sep 2015
3-Month		74.7°F
(23.7°C)		72.2°F
(22.3°C)		2.5°F
(1.4°C)		115th Coolest
Coolest since:
1909
14th Warmest
Warmest since:
2016
Ties: 1955, 1999
Jun–Sep 2015
4-Month		74.4°F
(23.6°C)		71.9°F
(22.2°C)		2.5°F
(1.4°C)		116th Coolest
Coolest since:
1927
13th Warmest
Warmest since:
2010
May–Sep 2015
5-Month		73.1°F
(22.8°C)		69.9°F
(21.1°C)		3.2°F
(1.7°C)		123rd Coolest
Coolest since:
1924, 1927
6th Warmest
Warmest since:
2010
Apr–Sep 2015
6-Month		70.0°F
(21.1°C)		66.9°F
(19.4°C)		3.1°F
(1.7°C)		123rd Coolest
Coolest since:
1907
6th Warmest
Warmest since:
2010
Mar–Sep 2015
7-Month		65.7°F
(18.7°C)		63.5°F
(17.5°C)		2.2°F
(1.2°C)		114th Coolest
Coolest since:
1924
15th Warmest
Warmest since:
2010
Feb–Sep 2015
8-Month		60.8°F
(16.0°C)		59.8°F
(15.4°C)		1.0°F
(0.6°C)		89th Coolest
Coolest since:
1907
40th Warmest
Warmest since:
2012
Ties: 1952, 1987, 2001
Jan–Sep 2015
9-Month		57.6°F
(14.2°C)		56.9°F
(13.8°C)		0.7°F
(0.4°C)		81st Coolest
Coolest since:
1940
48th Warmest
Warmest since:
2012
Ties: 1943, 1986, 1987
Dec 2014–Sep 2015
10-Month		55.9°F
(13.3°C)		54.8°F
(12.7°C)		1.1°F
(0.6°C)		88th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Ties: 1898, 1976, 1997
Nov 2014–Sep 2015
11-Month		54.9°F
(12.7°C)		54.0°F
(12.2°C)		0.9°F
(0.5°C)		84th Coolest
Coolest since:
1904
44th Warmest
Warmest since:
2012
Ties: 1898, 1925, 1942, 1974
Oct 2014–Sep 2015
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, 2009
Apr 2014–Sep 2015
18-Month		59.5°F
(15.3°C)		58.4°F
(14.7°C)		1.1°F
(0.6°C)		98th Coolest
Coolest since:
1918
30th Warmest
Warmest since:
2012
Ties: 1954
Oct 2013–Sep 2015
24-Month		55.0°F
(12.8°C)		54.2°F
(12.3°C)		0.8°F
(0.5°C)		89th Coolest
Coolest since:
1905
38th Warmest
Warmest since:
2017
Ties: 1943, 1990, 2004
Oct 2012–Sep 2015
36-Month		55.3°F
(12.9°C)		54.2°F
(12.3°C)		1.1°F
(0.6°C)		98th Coolest
Coolest since:
1905, 1918
28th Warmest
Warmest since:
2018
Ties: 1955
Oct 2011–Sep 2015
48-Month		56.2°F
(13.4°C)		54.2°F
(12.3°C)		2.0°F
(1.1°C)		110th Coolest
Coolest since:
1905
15th Warmest
Warmest since:
2019
Ties: 2007
Oct 2010–Sep 2015
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, 2009

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