S
M
T
W
T
F
S
26
77°
54°
27
79°
54°
28
59°
46°
29
61°
41°
30
64°
37°
1
64°
36°
2
63°
37°
3
81°
43°
4
81°
55°
5
70°
43°
6
59°
41°
7
68°
37°
8
64°
48°
9
81°
48°
10
68°
46°
11
77°
41°
12
79°
52°
13
77°
52°
14
77°
46°
15
81°
63°
16
86°
63°
17
82°
68°
18
77°
61°
19
63°
52°
20
64°
50°
21
64°
54°
22
70°
57°
23
77°
54°
24
79°
50°
25
81°
52°
26
82°
60°
27
82°
61°
28
85°
64°
29
79°
62°
30
80°
63°
31
78°
57°
1
79°
58°
2
83°
59°
3
81°
60°
4
85°
60°
5
87°
65°
6
89°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Dover
Dover's May 2026 forecast shows daily high temperatures ranging from 78° to 89°, with overnight lows between 57° and 67°. The average high for May is 83° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Dover. See also: June | July | August.
