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 1940

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1940
1-Month
64.4°F
(18.0°C)
67.4°F
(19.7°C)
-3.0°F
(-1.7°C)
10th Coolest Coolest since: 1937 1917
118th Warmest Warmest since: 1939 2018
Aug–Sep 1940
2-Month
68.0°F
(20.0°C)
70.5°F
(21.4°C)
-2.5°F
(-1.4°C)
3rd Coolest Coolest since: 1927 1927, 1963
125th Warmest Warmest since: 1939 2018
Jul–Sep 1940
3-Month
70.4°F
(21.3°C)
72.2°F
(22.3°C)
-1.8°F
(-1.0°C)
8th Coolest Coolest since: 1927 1909
120th Warmest Warmest since: 1939 2016
Ties: 1917, 1946
Jun–Sep 1940
4-Month
70.6°F
(21.4°C)
71.9°F
(22.2°C)
-1.3°F
(-0.8°C)
15th Coolest Coolest since: 1927 1927
113th Warmest Warmest since: 1939 2010
Ties: 1897, 1916, 1992
May–Sep 1940
5-Month
68.7°F
(20.4°C)
69.9°F
(21.1°C)
-1.2°F
(-0.7°C)
14th Coolest Coolest since: 1935 1924, 1927
114th Warmest Warmest since: 1939 2010
Ties: 1935
Apr–Sep 1940
6-Month
65.0°F
(18.3°C)
66.9°F
(19.4°C)
-1.9°F
(-1.1°C)
5th Coolest Coolest since: 1927 1907
123rd Warmest Warmest since: 1939 2010
Ties: 1950
Mar–Sep 1940
7-Month
61.1°F
(16.2°C)
63.4°F
(17.4°C)
-2.3°F
(-1.2°C)
2nd Coolest Coolest since: 1924 1924
126th Warmest Warmest since: 1939 2010
Ties: 1907
Feb–Sep 1940
8-Month
57.6°F
(14.2°C)
59.8°F
(15.4°C)
-2.2°F
(-1.2°C)
4th Coolest Coolest since: 1924 1907
124th Warmest Warmest since: 1939 2012
Ties: 1967
Jan–Sep 1940
9-Month
53.6°F
(12.0°C)
56.8°F
(13.8°C)
-3.2°F
(-1.8°C)
1st Coolest Coolest to Date 1940
127th Warmest Warmest since: 1939 2012
Dec 1939–Sep 1940
10-Month
52.0°F
(11.1°C)
54.8°F
(12.7°C)
-2.8°F
(-1.6°C)
2nd Coolest Coolest since: 1904 1904
125th Warmest Warmest since: 1939 2012
Nov 1939–Sep 1940
11-Month
51.1°F
(10.6°C)
54.0°F
(12.2°C)
-2.9°F
(-1.6°C)
2nd Coolest Coolest since: 1904 1904
125th Warmest Warmest since: 1939 2012
Oct 1939–Sep 1940
12-Month
51.5°F
(10.8°C)
54.1°F
(12.3°C)
-2.6°F
(-1.5°C)
2nd Coolest Coolest since: 1918 1904
125th Warmest Warmest since: 1939 2012
Ties: 1918
Apr 1939–Sep 1940
18-Month
56.9°F
(13.8°C)
58.4°F
(14.7°C)
-1.5°F
(-0.9°C)
4th Coolest Coolest since: 1918 1904, 1918
123rd Warmest Warmest since: 1939 2012
Oct 1938–Sep 1940
24-Month
53.4°F
(11.9°C)
54.1°F
(12.3°C)
-0.7°F
(-0.4°C)
24th Coolest Coolest since: 1936 1905
102nd Warmest Warmest since: 1939 2017
Ties: 1907, 1916
Oct 1937–Sep 1940
36-Month
53.8°F
(12.1°C)
54.2°F
(12.3°C)
-0.4°F
(-0.2°C)
33rd Coolest Coolest since: 1937 1905, 1918
92nd Warmest Warmest since: 1939 2018, 2021
Ties: 1899, 1910, 1911, 1937, 1962, 1980, 1982
Oct 1936–Sep 1940
48-Month
54.0°F
(12.2°C)
54.2°F
(12.3°C)
-0.2°F
(-0.1°C)
47th Coolest Coolest since: 1938 1905
77th Warmest Warmest since: 1939 2019
Ties: 1900, 1916, 1942, 1962
Oct 1935–Sep 1940
60-Month
53.9°F
(12.2°C)
54.2°F
(12.3°C)
-0.3°F
(-0.1°C)
38th Coolest Coolest since: 1938 1908
85th Warmest Warmest since: 1939 2020
Ties: 1902, 1913, 1937, 1941, 1944

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 17, 2021 from https://www.ncdc.noaa.gov/cag/