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 1990

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1990
1-Month		66.0°F
(18.9°C)		67.4°F
(19.7°C)		-1.4°F
(-0.8°C)		24th Coolest
Coolest since:
1917
105th Warmest
Warmest since:
2018
Ties: 1938, 1981, 1994
Aug–Sep 1990
2-Month		70.1°F
(21.2°C)		70.6°F
(21.4°C)		-0.5°F
(-0.2°C)		39th Coolest
Coolest since:
1927, 1963
90th Warmest
Warmest since:
2018
Ties: 1897, 1923, 1969, 1972, 2013
Jul–Sep 1990
3-Month		72.4°F
(22.4°C)		72.2°F
(22.3°C)		0.2°F
(0.1°C)		62nd Coolest
Coolest since:
1909
67th Warmest
Warmest since:
2016
Ties: 1925, 1986
Jun–Sep 1990
4-Month		72.2°F
(22.3°C)		71.9°F
(22.2°C)		0.3°F
(0.1°C)		64th Coolest
Coolest since:
1927
65th Warmest
Warmest since:
2010
Ties: 1953
May–Sep 1990
5-Month		70.0°F
(21.1°C)		69.9°F
(21.1°C)		0.1°F
(0.0°C)		59th Coolest
Coolest since:
1924, 1927
70th Warmest
Warmest since:
2010
Ties: 1968, 2000
Apr–Sep 1990
6-Month		67.2°F
(19.6°C)		66.9°F
(19.4°C)		0.3°F
(0.2°C)		65th Coolest
Coolest since:
1907
64th Warmest
Warmest since:
2010
Ties: 1936, 1981, 2003
Mar–Sep 1990
7-Month		64.3°F
(17.9°C)		63.5°F
(17.5°C)		0.8°F
(0.4°C)		84th Coolest
Coolest since:
1924
45th Warmest
Warmest since:
2010
Ties: 1983, 1993
Feb–Sep 1990
8-Month		61.6°F
(16.4°C)		59.8°F
(15.4°C)		1.8°F
(1.0°C)		110th Coolest
Coolest since:
1907
19th Warmest
Warmest since:
2012
Jan–Sep 1990
9-Month		59.3°F
(15.2°C)		56.9°F
(13.8°C)		2.4°F
(1.4°C)		114th Coolest
Coolest since:
1940
15th Warmest
Warmest since:
2012
Ties: 2008, 2022
Dec 1989–Sep 1990
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, 1939
Nov 1989–Sep 1990
11-Month		55.0°F
(12.8°C)		54.0°F
(12.2°C)		1.0°F
(0.6°C)		89th Coolest
Coolest since:
1904
39th Warmest
Warmest since:
2012
Ties: 1980, 1986, 1989, 1993
Oct 1989–Sep 1990
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, 2009, 2015
Apr 1989–Sep 1990
18-Month		59.4°F
(15.2°C)		58.4°F
(14.7°C)		1.0°F
(0.5°C)		96th Coolest
Coolest since:
1918
32nd Warmest
Warmest since:
2012
Ties: 1960, 1974, 1992, 2003
Oct 1988–Sep 1990
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, 2004, 2015
Oct 1987–Sep 1990
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: 1939, 1950, 1952, 1989
Oct 1986–Sep 1990
48-Month		54.9°F
(12.7°C)		54.2°F
(12.3°C)		0.7°F
(0.4°C)		85th Coolest
Coolest since:
1905
40th Warmest
Warmest since:
2019
Ties: 1989, 1995
Oct 1985–Sep 1990
60-Month		55.0°F
(12.8°C)		54.1°F
(12.3°C)		0.9°F
(0.5°C)		89th Coolest
Coolest since:
1908
35th Warmest
Warmest since:
2020
Ties: 1933, 1954, 1976

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