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 2017

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2017
1-Month
69.8°F
(21.0°C)
67.4°F
(19.7°C)
2.4°F
(1.3°C)
104th Coolest
Coolest since:
1917
25th Warmest
Warmest since:
2018
Ties: 1959
Aug–Sep 2017
2-Month
71.9°F
(22.2°C)
70.6°F
(21.4°C)
1.3°F
(0.8°C)
93rd Coolest
Coolest since:
1927, 1963
36th Warmest
Warmest since:
2018
Ties: 1921, 1947, 1987, 1993
Jul–Sep 2017
3-Month
74.1°F
(23.4°C)
72.2°F
(22.3°C)
1.9°F
(1.1°C)
105th Coolest
Coolest since:
1909
24th Warmest
Warmest since:
2016
Ties: 1987, 1998
Jun–Sep 2017
4-Month
73.9°F
(23.3°C)
71.8°F
(22.1°C)
2.1°F
(1.2°C)
114th Coolest
Coolest since:
1927
15th Warmest
Warmest since:
2010
Ties: 2007, 2008
May–Sep 2017
5-Month
71.7°F
(22.1°C)
69.9°F
(21.1°C)
1.8°F
(1.0°C)
109th Coolest
Coolest since:
1924, 1927
20th Warmest
Warmest since:
2010
Ties: 1998, 1999
Apr–Sep 2017
6-Month
69.7°F
(20.9°C)
66.9°F
(19.4°C)
2.8°F
(1.5°C)
121st Coolest
Coolest since:
1907
8th Warmest
Warmest since:
2010
Mar–Sep 2017
7-Month
66.0°F
(18.9°C)
63.5°F
(17.5°C)
2.5°F
(1.4°C)
119th Coolest
Coolest since:
1924
10th Warmest
Warmest since:
2010
Ties: 1991, 2020, 2022
Feb–Sep 2017
8-Month
63.3°F
(17.4°C)
59.8°F
(15.4°C)
3.5°F
(2.0°C)
124th Coolest
Coolest since:
1907
5th Warmest
Warmest since:
2012
Ties: 2002
Jan–Sep 2017
9-Month
60.6°F
(15.9°C)
56.9°F
(13.8°C)
3.7°F
(2.1°C)
126th Coolest
Coolest since:
1940
3rd Warmest
Warmest since:
2012
Dec 2016–Sep 2017
10-Month
58.5°F
(14.7°C)
54.8°F
(12.7°C)
3.7°F
(2.0°C)
123rd Coolest
Coolest since:
1904
5th Warmest
Warmest since:
2012
Nov 2016–Sep 2017
11-Month
57.6°F
(14.2°C)
54.0°F
(12.2°C)
3.6°F
(2.0°C)
124th Coolest
Coolest since:
1904
4th Warmest
Warmest since:
2012
Oct 2016–Sep 2017
12-Month
57.8°F
(14.3°C)
54.2°F
(12.3°C)
3.6°F
(2.0°C)
124th Coolest
Coolest since:
1904
4th Warmest
Warmest since:
2012
Apr 2016–Sep 2017
18-Month
61.7°F
(16.5°C)
58.4°F
(14.7°C)
3.3°F
(1.8°C)
123rd Coolest
Coolest since:
1904, 1918
5th Warmest
Warmest since:
2012
Oct 2015–Sep 2017
24-Month
58.0°F
(14.4°C)
54.2°F
(12.3°C)
3.8°F
(2.1°C)
126th Coolest
Coolest since:
1905
1st Warmest
Warmest to Date
2017
Oct 2014–Sep 2017
36-Month
57.1°F
(13.9°C)
54.2°F
(12.3°C)
2.9°F
(1.6°C)
119th Coolest
Coolest since:
1905, 1918
7th Warmest
Warmest since:
2018
Oct 2013–Sep 2017
48-Month
56.5°F
(13.6°C)
54.2°F
(12.3°C)
2.3°F
(1.3°C)
117th Coolest
Coolest since:
1905
8th Warmest
Warmest since:
2019
Ties: 2014
Oct 2012–Sep 2017
60-Month
56.4°F
(13.6°C)
54.1°F
(12.3°C)
2.3°F
(1.3°C)
113th Coolest
Coolest since:
1908
11th Warmest
Warmest since:
2020
Ties: 2002, 2011

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