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 2019. For more information, please see Climatological Rankings.


Delaware

Average Temperature Rankings, September 1899

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1899
1-Month
65.4°F
(18.6°C)
67.4°F
(19.7°C)
-2.0°F
(-1.1°C)
16th Coolest Coolest to Date 1917
110th Warmest Warmest since: 1898 2018
Ties: 1908
Aug–Sep 1899
2-Month
69.4°F
(20.8°C)
70.6°F
(21.4°C)
-1.2°F
(-0.6°C)
18th Coolest Coolest to Date 1927, 1963
108th Warmest Warmest since: 1898 2018
Ties: 1956, 1964, 1976, 1992
Jul–Sep 1899
3-Month
71.5°F
(21.9°C)
72.2°F
(22.3°C)
-0.7°F
(-0.4°C)
27th Coolest Coolest to Date 1909
99th Warmest Warmest since: 1898 2016
Ties: 1905, 1920, 1935, 1937, 1964, 1992
Jun–Sep 1899
4-Month
71.9°F
(22.2°C)
71.8°F
(22.1°C)
0.1°F
(0.1°C)
55th Coolest Coolest since: 1897 1927
71st Warmest Warmest since: 1898 2010
Ties: 1938, 1960, 1978, 1996
May–Sep 1899
5-Month
69.9°F
(21.1°C)
69.9°F
(21.1°C)
0.0°F
(0.0°C)
52nd Coolest Coolest since: 1897 1924, 1927
74th Warmest Warmest since: 1898 2010
Ties: 1914, 1922, 1945, 1947, 1954, 1964
Apr–Sep 1899
6-Month
66.8°F
(19.3°C)
66.9°F
(19.4°C)
-0.1°F
(-0.1°C)
46th Coolest Coolest since: 1897 1907
80th Warmest Warmest since: 1898 2010
Ties: 1908, 1913, 1915, 1951, 1961, 1965
Mar–Sep 1899
7-Month
63.1°F
(17.3°C)
63.5°F
(17.5°C)
-0.4°F
(-0.2°C)
38th Coolest Coolest since: 1897 1924
88th Warmest Warmest since: 1898 2010
Ties: 1895, 1902, 1903
Feb–Sep 1899
8-Month
58.6°F
(14.8°C)
59.9°F
(15.5°C)
-1.3°F
(-0.7°C)
18th Coolest Coolest since: 1895 1907
108th Warmest Warmest since: 1898 2012
Ties: 1912, 1927, 1928, 1972
Jan–Sep 1899
9-Month
55.6°F
(13.1°C)
56.8°F
(13.8°C)
-1.2°F
(-0.7°C)
17th Coolest Coolest since: 1895 1940
109th Warmest Warmest since: 1898 2012
Ties: 1963
Dec 1898–Sep 1899
10-Month
53.7°F
(12.1°C)
54.9°F
(12.7°C)
-1.2°F
(-0.6°C)
20th Coolest Coolest since: 1897 1904
105th Warmest Warmest since: 1898 2012
Ties: 1897, 1958
Nov 1898–Sep 1899
11-Month
52.7°F
(11.5°C)
54.0°F
(12.2°C)
-1.3°F
(-0.7°C)
15th Coolest Coolest to Date 1904
110th Warmest Warmest since: 1898 2012
Ties: 1916, 1924, 1982
Oct 1898–Sep 1899
12-Month
53.1°F
(11.7°C)
54.2°F
(12.3°C)
-1.1°F
(-0.6°C)
19th Coolest Coolest to Date 1904
106th Warmest Warmest since: 1898 2012
Ties: 1934, 1958, 1970
Apr 1898–Sep 1899
18-Month
57.8°F
(14.3°C)
58.4°F
(14.7°C)
-0.6°F
(-0.4°C)
23rd Coolest Coolest to Date 1904, 1918
102nd Warmest Warmest since: 1898 2012
Oct 1897–Sep 1899
24-Month
54.1°F
(12.3°C)
54.2°F
(12.3°C)
-0.1°F
(0.0°C)
46th Coolest Coolest since: 1897 1905
78th Warmest Warmest since: 1898 2017
Ties: 1913, 1956
Oct 1896–Sep 1899
36-Month
53.8°F
(12.1°C)
54.1°F
(12.3°C)
-0.3°F
(-0.2°C)
33rd Coolest Coolest to Date 1905, 1918
90th Warmest Warmest since: 1898 2018
Ties: 1910, 1911, 1937, 1940, 1962, 1980, 1982
Oct 1895–Sep 1899
48-Month
53.8°F
(12.1°C)
54.1°F
(12.3°C)
-0.3°F
(-0.2°C)
33rd Coolest Coolest to Date 1905
89th Warmest Warmest to Date 2019
Ties: 1913, 1936, 1943, 1979

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 22, 2019 from https://www.ncdc.noaa.gov/cag/