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 1959

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1959
1-Month
69.8°F
(21.0°C)
67.4°F
(19.7°C)
2.4°F
(1.3°C)
102nd Coolest Coolest since: 1958 1917
24th Warmest Warmest since: 1945 2018
Ties: 2017
Aug–Sep 1959
2-Month
73.0°F
(22.8°C)
70.5°F
(21.4°C)
2.5°F
(1.4°C)
111th Coolest Coolest since: 1958 1927, 1963
15th Warmest Warmest since: 1931 2018
Ties: 1895, 1961, 1977
Jul–Sep 1959
3-Month
74.0°F
(23.3°C)
72.2°F
(22.3°C)
1.8°F
(1.0°C)
102nd Coolest Coolest since: 1958 1909
24th Warmest Warmest since: 1955 2016
Ties: 1901, 1961, 2003
Jun–Sep 1959
4-Month
73.6°F
(23.1°C)
71.9°F
(22.2°C)
1.7°F
(0.9°C)
109th Coolest Coolest since: 1958 1927
17th Warmest Warmest since: 1930 2010
Ties: 1973
May–Sep 1959
5-Month
72.0°F
(22.2°C)
69.9°F
(21.1°C)
2.1°F
(1.1°C)
114th Coolest Coolest since: 1958 1924, 1927
12th Warmest Warmest since: 1900 2010
Ties: 2007
Apr–Sep 1959
6-Month
69.1°F
(20.6°C)
66.9°F
(19.4°C)
2.2°F
(1.2°C)
114th Coolest Coolest since: 1958 1907
12th Warmest Warmest to Date 2010
Mar–Sep 1959
7-Month
65.3°F
(18.5°C)
63.4°F
(17.4°C)
1.9°F
(1.1°C)
109th Coolest Coolest since: 1958 1924
17th Warmest Warmest since: 1945 2010
Ties: 1945
Feb–Sep 1959
8-Month
61.5°F
(16.4°C)
59.8°F
(15.4°C)
1.7°F
(1.0°C)
109th Coolest Coolest since: 1958 1907
17th Warmest Warmest since: 1957 2012
Ties: 1925, 1945, 1957, 1999
Jan–Sep 1959
9-Month
58.3°F
(14.6°C)
56.9°F
(13.8°C)
1.4°F
(0.8°C)
105th Coolest Coolest since: 1958 1940
21st Warmest Warmest since: 1953 2012
Ties: 1913, 1933, 1952, 2013
Dec 1958–Sep 1959
10-Month
55.3°F
(12.9°C)
54.8°F
(12.7°C)
0.5°F
(0.2°C)
70th Coolest Coolest since: 1958 1904
55th Warmest Warmest since: 1957 2012
Ties: 1945, 1986
Nov 1958–Sep 1959
11-Month
54.5°F
(12.5°C)
53.9°F
(12.2°C)
0.6°F
(0.3°C)
74th Coolest Coolest since: 1958 1904
51st Warmest Warmest since: 1957 2012
Ties: 1900, 1938
Oct 1958–Sep 1959
12-Month
54.7°F
(12.6°C)
54.2°F
(12.3°C)
0.5°F
(0.3°C)
77th Coolest Coolest since: 1958 1904
48th Warmest Warmest since: 1957 2012
Ties: 1900, 1947, 1989, 1997, 2014
Apr 1958–Sep 1959
18-Month
58.6°F
(14.8°C)
58.4°F
(14.7°C)
0.2°F
(0.1°C)
59th Coolest Coolest since: 1958 1904, 1918
66th Warmest Warmest since: 1957 2012
Ties: 1898, 1944, 1973, 1975, 1981, 2001
Oct 1957–Sep 1959
24-Month
53.9°F
(12.2°C)
54.2°F
(12.3°C)
-0.3°F
(-0.1°C)
38th Coolest Coolest since: 1941 1905
86th Warmest Warmest since: 1958 2017
Ties: 1900, 1909, 1910, 1925, 1961
Oct 1956–Sep 1959
36-Month
54.5°F
(12.5°C)
54.2°F
(12.3°C)
0.3°F
(0.2°C)
69th Coolest Coolest since: 1958 1905, 1918
54th Warmest Warmest since: 1957 2018
Ties: 1922, 1930, 1931, 1956, 1973, 1977, 1994
Oct 1955–Sep 1959
48-Month
54.1°F
(12.3°C)
54.1°F
(12.3°C)
0.0°F
(0.0°C)
52nd Coolest Coolest since: 1943 1905
70th Warmest Warmest since: 1958 2019
Ties: 1930, 1978
Oct 1954–Sep 1959
60-Month
54.3°F
(12.4°C)
54.1°F
(12.3°C)
0.2°F
(0.1°C)
63rd Coolest Coolest since: 1948 1908
58th Warmest Warmest since: 1958 2019
Ties: 1961, 1978, 1985

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2019, retrieved on October 19, 2019 from https://www.ncdc.noaa.gov/cag/