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 1991

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1991
1-Month
67.0°F
(19.4°C)
67.4°F
(19.7°C)
-0.4°F
(-0.3°C)
45th Coolest Coolest since: 1990 1917
83rd Warmest Warmest since: 1989 2018
Ties: 1905, 1927, 1951, 1952
Aug–Sep 1991
2-Month
71.4°F
(21.9°C)
70.6°F
(21.4°C)
0.8°F
(0.5°C)
78th Coolest Coolest since: 1990 1927, 1963
50th Warmest Warmest since: 1989 2018
Ties: 1911, 1989
Jul–Sep 1991
3-Month
73.3°F
(22.9°C)
72.2°F
(22.3°C)
1.1°F
(0.6°C)
90th Coolest Coolest since: 1990 1909
38th Warmest Warmest since: 1988 2016
Jun–Sep 1991
4-Month
73.1°F
(22.8°C)
71.8°F
(22.1°C)
1.3°F
(0.7°C)
94th Coolest Coolest since: 1990 1927
34th Warmest Warmest since: 1988 2010
Ties: 1934, 1952, 1961, 1983
May–Sep 1991
5-Month
72.2°F
(22.3°C)
69.9°F
(21.1°C)
2.3°F
(1.2°C)
116th Coolest Coolest since: 1990 1924, 1927
12th Warmest Warmest since: 1900 2010
Apr–Sep 1991
6-Month
69.3°F
(20.7°C)
66.9°F
(19.4°C)
2.4°F
(1.3°C)
117th Coolest Coolest since: 1990 1907
11th Warmest Warmest to Date 2010
Mar–Sep 1991
7-Month
66.0°F
(18.9°C)
63.5°F
(17.5°C)
2.5°F
(1.4°C)
117th Coolest Coolest since: 1990 1924
11th Warmest Warmest since: 1921 2010
Ties: 2017
Feb–Sep 1991
8-Month
62.8°F
(17.1°C)
59.8°F
(15.4°C)
3.0°F
(1.7°C)
117th Coolest Coolest since: 1990 1907
11th Warmest Warmest to Date 2012
Jan–Sep 1991
9-Month
59.8°F
(15.4°C)
56.9°F
(13.8°C)
2.9°F
(1.6°C)
118th Coolest Coolest since: 1990 1940
10th Warmest Warmest to Date 2012
Ties: 2018
Dec 1990–Sep 1991
10-Month
58.1°F
(14.5°C)
54.8°F
(12.7°C)
3.3°F
(1.8°C)
119th Coolest Coolest since: 1990 1904
8th Warmest Warmest to Date 2012
Ties: 1998
Nov 1990–Sep 1991
11-Month
57.3°F
(14.1°C)
54.0°F
(12.2°C)
3.3°F
(1.9°C)
120th Coolest Coolest since: 1990 1904
7th Warmest Warmest to Date 2012
Ties: 2010
Oct 1990–Sep 1991
12-Month
57.6°F
(14.2°C)
54.2°F
(12.3°C)
3.4°F
(1.9°C)
121st Coolest Coolest since: 1990 1904
6th Warmest Warmest to Date 2012
Ties: 2019, 2020
Apr 1990–Sep 1991
18-Month
60.8°F
(16.0°C)
58.5°F
(14.7°C)
2.3°F
(1.3°C)
117th Coolest Coolest since: 1990 1904, 1918
10th Warmest Warmest to Date 2012
Ties: 2006, 2008, 2010, 2013
Oct 1989–Sep 1991
24-Month
56.4°F
(13.6°C)
54.2°F
(12.3°C)
2.2°F
(1.3°C)
113th Coolest Coolest since: 1990 1905
13th Warmest Warmest to Date 2017
Ties: 2002
Oct 1988–Sep 1991
36-Month
55.8°F
(13.2°C)
54.1°F
(12.3°C)
1.7°F
(0.9°C)
105th Coolest Coolest since: 1990 1905, 1918
20th Warmest Warmest to Date 2018, 2021
Oct 1987–Sep 1991
48-Month
55.5°F
(13.1°C)
54.1°F
(12.3°C)
1.4°F
(0.8°C)
101st Coolest Coolest since: 1990 1905
23rd Warmest Warmest to Date 2019
Ties: 1992, 1993
Oct 1986–Sep 1991
60-Month
55.4°F
(13.0°C)
54.1°F
(12.3°C)
1.3°F
(0.7°C)
99th Coolest Coolest since: 1990 1908
24th Warmest Warmest to Date 2020
Ties: 1993, 1995

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/