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 1939

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1939
1-Month		68.1°F
(20.1°C)		67.4°F
(19.7°C)		0.7°F
(0.4°C)		73rd Coolest
Coolest since:
1917
56th Warmest
Warmest since:
2018
Ties: 1947, 1996
Aug–Sep 1939
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: 2009
Jul–Sep 1939
3-Month		72.8°F
(22.7°C)		72.2°F
(22.3°C)		0.6°F
(0.4°C)		79th Coolest
Coolest since:
1909
50th Warmest
Warmest since:
2016
Jun–Sep 1939
4-Month		72.8°F
(22.7°C)		71.9°F
(22.2°C)		0.9°F
(0.5°C)		83rd Coolest
Coolest since:
1927
46th Warmest
Warmest since:
2010
Ties: 1970, 1977
May–Sep 1939
5-Month		71.0°F
(21.7°C)		69.9°F
(21.1°C)		1.1°F
(0.6°C)		90th Coolest
Coolest since:
1924, 1927
39th Warmest
Warmest since:
2010
Ties: 1898, 1986, 1988, 2014
Apr–Sep 1939
6-Month		67.7°F
(19.8°C)		66.9°F
(19.4°C)		0.8°F
(0.4°C)		79th Coolest
Coolest since:
1907
50th Warmest
Warmest since:
2010
Ties: 1970
Mar–Sep 1939
7-Month		64.2°F
(17.9°C)		63.5°F
(17.5°C)		0.7°F
(0.4°C)		81st Coolest
Coolest since:
1924
48th Warmest
Warmest since:
2010
Ties: 1952, 1988
Feb–Sep 1939
8-Month		61.2°F
(16.2°C)		59.8°F
(15.4°C)		1.4°F
(0.8°C)		98th Coolest
Coolest since:
1907
31st Warmest
Warmest since:
2012
Ties: 1930, 1985, 2005
Jan–Sep 1939
9-Month		58.2°F
(14.6°C)		56.9°F
(13.8°C)		1.3°F
(0.8°C)		100th Coolest
Coolest since:
1940
29th Warmest
Warmest since:
2012
Ties: 1925, 1930, 2000, 2005
Dec 1938–Sep 1939
10-Month		56.0°F
(13.3°C)		54.8°F
(12.7°C)		1.2°F
(0.6°C)		91st Coolest
Coolest since:
1904
37th Warmest
Warmest since:
2012
Ties: 1925, 1990
Nov 1938–Sep 1939
11-Month		55.3°F
(12.9°C)		54.0°F
(12.2°C)		1.3°F
(0.7°C)		97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Ties: 1973
Oct 1938–Sep 1939
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, 1990, 2009, 2015
Apr 1938–Sep 1939
18-Month		59.2°F
(15.1°C)		58.4°F
(14.7°C)		0.8°F
(0.4°C)		86th Coolest
Coolest since:
1918
42nd Warmest
Warmest since:
2012
Ties: 1913, 1943, 1952, 1988
Oct 1937–Sep 1939
24-Month		54.9°F
(12.7°C)		54.2°F
(12.3°C)		0.7°F
(0.4°C)		85th Coolest
Coolest since:
1905
42nd Warmest
Warmest since:
2017
Ties: 1949, 1952, 1973, 1996
Oct 1936–Sep 1939
36-Month		54.8°F
(12.7°C)		54.2°F
(12.3°C)		0.6°F
(0.4°C)		79th Coolest
Coolest since:
1905, 1918
47th Warmest
Warmest since:
2018
Ties: 1950, 1952, 1989, 1990
Oct 1935–Sep 1939
48-Month		54.4°F
(12.4°C)		54.2°F
(12.3°C)		0.2°F
(0.1°C)		65th Coolest
Coolest since:
1905
60th Warmest
Warmest since:
2019
Ties: 1924, 1931
Oct 1934–Sep 1939
60-Month		54.2°F
(12.3°C)		54.1°F
(12.3°C)		0.1°F
(0.0°C)		56th Coolest
Coolest since:
1908
68th Warmest
Warmest since:
2020
Ties: 1936, 1948, 1960

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