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 October 2021. For more information, please see Climatological Rankings.


Delaware

Average Temperature Rankings, September 2009

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 2009
1-Month
66.9°F
(19.4°C)
67.4°F
(19.7°C)
-0.5°F
(-0.3°C)
44th Coolest Coolest since: 2006 1917
84th Warmest Warmest since: 2008 2018
Aug–Sep 2009
2-Month
72.0°F
(22.2°C)
70.5°F
(21.4°C)
1.5°F
(0.8°C)
96th Coolest Coolest since: 2008 1927, 1963
32nd Warmest Warmest since: 2007 2018
Ties: 1936, 1939
Jul–Sep 2009
3-Month
72.9°F
(22.7°C)
72.2°F
(22.3°C)
0.7°F
(0.4°C)
81st Coolest Coolest since: 2001 1909
47th Warmest Warmest since: 2008 2016
Ties: 1944
Jun–Sep 2009
4-Month
72.4°F
(22.4°C)
71.9°F
(22.2°C)
0.5°F
(0.2°C)
71st Coolest Coolest since: 2001 1927
57th Warmest Warmest since: 2008 2010
Ties: 1936, 1942, 1945, 2001
May–Sep 2009
5-Month
70.7°F
(21.5°C)
69.9°F
(21.1°C)
0.8°F
(0.4°C)
80th Coolest Coolest since: 2003 1924, 1927
48th Warmest Warmest since: 2008 2010
Ties: 1901, 1921, 1936, 1952, 1983, 1989
Apr–Sep 2009
6-Month
68.0°F
(20.0°C)
66.9°F
(19.4°C)
1.1°F
(0.6°C)
96th Coolest Coolest since: 2003 1907
32nd Warmest Warmest since: 2008 2010
Ties: 1930, 1944, 1952, 1985, 1994, 2014
Mar–Sep 2009
7-Month
64.5°F
(18.1°C)
63.4°F
(17.4°C)
1.1°F
(0.7°C)
95th Coolest Coolest since: 2003 1924
33rd Warmest Warmest since: 2008 2010
Ties: 2013
Feb–Sep 2009
8-Month
61.3°F
(16.3°C)
59.9°F
(15.5°C)
1.4°F
(0.8°C)
102nd Coolest Coolest since: 2007 1907
26th Warmest Warmest since: 2008 2012
Ties: 1955, 2000
Jan–Sep 2009
9-Month
57.9°F
(14.4°C)
56.9°F
(13.8°C)
1.0°F
(0.6°C)
91st Coolest Coolest since: 2003 1940
37th Warmest Warmest since: 2008 2012
Ties: 1898, 1932, 1976, 1989
Dec 2008–Sep 2009
10-Month
56.2°F
(13.4°C)
54.9°F
(12.7°C)
1.3°F
(0.7°C)
96th Coolest Coolest since: 2003 1904
31st Warmest Warmest since: 2008 2012
Ties: 1954, 1983, 1985
Nov 2008–Sep 2009
11-Month
55.2°F
(12.9°C)
54.0°F
(12.2°C)
1.2°F
(0.7°C)
95th Coolest Coolest since: 2003 1904
32nd Warmest Warmest since: 2008 2012
Ties: 1930, 1954, 1985
Oct 2008–Sep 2009
12-Month
55.3°F
(12.9°C)
54.2°F
(12.3°C)
1.1°F
(0.6°C)
92nd Coolest Coolest since: 2003 1904
35th Warmest Warmest since: 2008 2012
Ties: 1933, 1939, 1990, 2015
Apr 2008–Sep 2009
18-Month
59.7°F
(15.4°C)
58.4°F
(14.7°C)
1.3°F
(0.7°C)
105th Coolest Coolest since: 2004 1904, 1918
22nd Warmest Warmest since: 2008 2012
Ties: 1949, 2004
Oct 2007–Sep 2009
24-Month
56.1°F
(13.4°C)
54.2°F
(12.3°C)
1.9°F
(1.1°C)
107th Coolest Coolest since: 2005 1905
19th Warmest Warmest since: 2008 2017
Oct 2006–Sep 2009
36-Month
56.2°F
(13.4°C)
54.2°F
(12.3°C)
2.0°F
(1.1°C)
111th Coolest Coolest since: 2006 1905, 1918
14th Warmest Warmest since: 2008 2018, 2021
Ties: 2002
Oct 2005–Sep 2009
48-Month
56.3°F
(13.5°C)
54.1°F
(12.3°C)
2.2°F
(1.2°C)
112th Coolest Coolest since: 2007 1905
12th Warmest Warmest since: 2008 2019
Ties: 2002
Oct 2004–Sep 2009
60-Month
56.2°F
(13.4°C)
54.1°F
(12.3°C)
2.1°F
(1.1°C)
109th Coolest Coolest since: 2007 1908
14th Warmest Warmest since: 2008 2020
Ties: 2006, 2015

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2021, retrieved on December 1, 2021 from https://www.ncdc.noaa.gov/cag/