Wilmington, Delaware June 1991 Average Temperature Rankings
1991-2020
Degrees Fahrenheit
1
73.0
72.6
0.4
60
21
1972,1979
2010
1990
1989
top-third
2
70.7
68.0
2.7
79
2
1967
2010
1990
1991
top-tenth
3
65.2
63.3
1.9
75
4
1967,1972
2010
1990
1991
top-tenth
4
60.0
58.3
1.7
74
3
1950
2010
1990
1991
top-tenth
5
55.8
53.7
2.1
74
3
1978
2012
1990
1991
top-tenth
6
52.1
50.3
1.8
70
7
1978
2012,2023
1990
1991
top-tenth
7
50.4
48.6
1.8
70
7
1978
2012
1990
1991
top-tenth
8
50.1
48.3
1.8
70
6
1978
2012
1990
1991
top-tenth
9
51.1
49.3
1.8
70
5
1978
2012
1990
1991
top-tenth
2016
10
52.6
51.3
1.3
67
8
1978
2012
1990
1991
top-third
11
54.6
53.5
1.1
65
10
1978
2012
1990
1991
top-third
12
56.4
55.5
0.9
63
12
1963
2012
1990
1991
top-third
18
54.9
53.7
1.2
64
8
1979
2012,2023
1990
1991
top-third
24
55.4
55.4
0.0
52
18
1978
2017
1990
1974
top-third
1992,2006
36
55.0
55.4
-0.4
40
25
1979
2023
1990
1976
normal
2016
48
54.6
55.3
-0.7
29
32
1964,1966,1968,1970,1980
2023
1990
1977
normal
60
54.4
55.2
-0.8
26
32
1967
2023
1985
1977
normal
1974,1996