Wilmington, Delaware, Average Temperature Rankings, May 2022
1991-2020
Degrees Fahrenheit
1
65.8
63.6
2.2
65
11
1967
2004
2021
2019
top-third
2
59.4
58.8
0.6
60
16
1967
2019
2021
2019
top-third
3
55.0
53.6
1.4
65
9
1967
2012
2021
2019
top-third
2000
4
51.0
49.1
1.9
68
6
1978
2012
2021
2017
top-tenth
1976
5
47.0
46.0
1.0
63
11
1978
2012
2021
2020
top-third
1985,2019
6
46.4
44.7
1.7
65
8
1978
2012
2021
2020
top-third
7
46.1
45.0
1.1
62
10
1978
2012
2021
2017
top-third
8
48.2
46.5
1.7
65
7
1978
2012
2021
2017
top-tenth
9
50.6
49.0
1.6
66
6
1978
2012
2021
2017
top-tenth
10
53.4
51.7
1.7
67
5
1978
2012
2021
2017
top-tenth
11
55.6
54.1
1.5
68
4
1963
2012
2021
2020
top-tenth
2002,2020
12
57.1
55.6
1.5
68
4
1963
2012
2021
2020
top-tenth
2002,2006,2020
18
53.1
51.9
1.2
65
4
1979
2017
2021
2021
top-tenth
2012,2021
24
56.8
55.6
1.2
66
2
1978
2017
2021
2017
top-tenth
2012
36
56.9
55.5
1.4
63
1
1979
2022
2021
2022
highest
48
56.7
55.5
1.2
59
1
1966,1968,1970,1980
2019,2020,2022
2021
2020
highest
2019,2020
60
56.5
55.4
1.1
54
3
1967,1970
2020
2019
2021
top-tenth