Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of September 2021. For more information, please see Climatological Rankings.


Delaware

Average Temperature Rankings, September 2020

View Period (Months):All1234567891011121824364860
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  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 2020
1-Month
69.1°F
(20.6°C)
67.4°F
(19.7°C)
1.7°F
(0.9°C)
93rd Coolest Coolest since: 2014 1917
35th Warmest Warmest since: 2019 2018
Ties: 2014
Aug–Sep 2020
2-Month
73.3°F
(22.9°C)
70.6°F
(21.4°C)
2.7°F
(1.5°C)
117th Coolest Coolest since: 2017 1927, 1963
11th Warmest Warmest since: 2019 2018
Ties: 2007
Jul–Sep 2020
3-Month
75.8°F
(24.3°C)
72.2°F
(22.3°C)
3.6°F
(2.0°C)
121st Coolest Coolest since: 2017 1909
7th Warmest Warmest since: 2019 2016
Jun–Sep 2020
4-Month
75.3°F
(24.1°C)
71.8°F
(22.1°C)
3.5°F
(2.0°C)
122nd Coolest Coolest since: 2017 1927
6th Warmest Warmest since: 2019 2010
Ties: 2011
May–Sep 2020
5-Month
72.4°F
(22.4°C)
69.9°F
(21.1°C)
2.5°F
(1.3°C)
119th Coolest Coolest since: 2017 1924, 1927
9th Warmest Warmest since: 2019 2010
Ties: 1900, 2002
Apr–Sep 2020
6-Month
69.0°F
(20.6°C)
66.9°F
(19.4°C)
2.1°F
(1.2°C)
114th Coolest Coolest since: 2014 1907
14th Warmest Warmest since: 2019 2010
Ties: 1998
Mar–Sep 2020
7-Month
66.3°F
(19.1°C)
63.5°F
(17.5°C)
2.8°F
(1.6°C)
120th Coolest Coolest since: 2018 1924
8th Warmest Warmest since: 2019 2010
Ties: 1921
Feb–Sep 2020
8-Month
63.2°F
(17.3°C)
59.8°F
(15.4°C)
3.4°F
(1.9°C)
121st Coolest Coolest since: 2018 1907
7th Warmest Warmest since: 2019 2012
Ties: 2016, 2018
Jan–Sep 2020
9-Month
60.7°F
(15.9°C)
56.9°F
(13.8°C)
3.8°F
(2.1°C)
126th Coolest Coolest since: 2019 1940
2nd Warmest Warmest since: 2012 2012
Ties: 2002
Dec 2019–Sep 2020
10-Month
58.6°F
(14.8°C)
54.8°F
(12.7°C)
3.8°F
(2.1°C)
123rd Coolest Coolest since: 2019 1904
4th Warmest Warmest since: 2019 2012
Ties: 2019
Nov 2019–Sep 2020
11-Month
57.2°F
(14.0°C)
53.9°F
(12.2°C)
3.3°F
(1.8°C)
118th Coolest Coolest since: 2018 1904
9th Warmest Warmest since: 2019 2012
Oct 2019–Sep 2020
12-Month
57.6°F
(14.2°C)
54.2°F
(12.3°C)
3.4°F
(1.9°C)
121st Coolest Coolest since: 2019 1904
6th Warmest Warmest since: 2019 2012
Ties: 1991, 2019
Apr 2019–Sep 2020
18-Month
62.1°F
(16.7°C)
58.4°F
(14.7°C)
3.7°F
(2.0°C)
125th Coolest Coolest since: 2019 1904, 1918
2nd Warmest Warmest since: 2016 2012
Ties: 2016
Oct 2018–Sep 2020
24-Month
57.6°F
(14.2°C)
54.2°F
(12.3°C)
3.4°F
(1.9°C)
123rd Coolest Coolest since: 2019 1905
3rd Warmest Warmest since: 2017 2017
Ties: 2012
Oct 2017–Sep 2020
36-Month
57.4°F
(14.1°C)
54.1°F
(12.3°C)
3.3°F
(1.8°C)
121st Coolest Coolest since: 2017 1905, 1918
4th Warmest Warmest since: 2019 2018, 2021
Ties: 2012
Oct 2016–Sep 2020
48-Month
57.5°F
(14.2°C)
54.1°F
(12.3°C)
3.4°F
(1.9°C)
122nd Coolest Coolest since: 2018 1905
2nd Warmest Warmest since: 2019 2019
Ties: 2021
Oct 2015–Sep 2020
60-Month
57.7°F
(14.3°C)
54.2°F
(12.3°C)
3.5°F
(2.0°C)
122nd Coolest Coolest since: 2019 1908
1st Warmest Warmest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 16, 2021 from https://www.ncdc.noaa.gov/cag/