Wilmington, Delaware May 1991 Average Temperature Rankings
1991-2020
Degrees Fahrenheit
1
68.5
63.5
5.0
80
2
1967
2004
1990
1991
top-tenth
2
61.3
58.6
2.7
77
3
1967
2019
1990
1985
top-tenth
1985
3
55.6
53.5
2.1
72
6
1950,1967
2012
1990
1985
top-tenth
4
51.5
49.0
2.5
74
4
1934,1978
2012
1990
1985
top-tenth
1985
5
47.9
45.9
2.0
71
7
1978
2023
1990
1990
top-tenth
1990,2006
6
46.7
44.6
2.1
71
7
1978
2012
1990
1991
top-tenth
7
46.8
44.9
1.9
70
7
1978
2012
1990
1991
top-tenth
8
48.4
46.4
2.0
70
6
1978
2012
1990
1991
top-tenth
9
50.3
48.9
1.4
68
8
1978
2012
1990
1991
top-tenth
10
52.7
51.6
1.1
67
9
1934
2012,2023
1990
1991
top-third
11
54.9
53.9
1.0
67
9
1963
2012
1990
1991
top-third
2019,2021
12
56.3
55.5
0.8
64
12
1963,1978
2012
1990
1974
top-third
1974
18
52.2
51.8
0.4
59
14
1979
2017,2023
1990
1974
top-third
1954,2002,2007,2011
24
55.5
55.4
0.1
56
15
1978
2017,2023
1990
1974
top-third
1954,1974,1992,2011
36
54.9
55.3
-0.4
40
26
1979
2023
1990
1976
normal
1993
48
54.6
55.3
-0.7
29
32
1964,1966,1970
2023
1990
1977
normal
1957
60
54.4
55.2
-0.8
25
33
1967
2023
1985
1977
normal
1958,1996