S
M
T
W
T
F
S
26
68°
49°
27
80°
47°
28
77°
58°
29
66°
52°
30
58°
41°
1
60°
40°
2
54°
34°
3
63°
32°
4
78°
50°
5
73°
58°
6
60°
47°
7
62°
42°
8
71°
40°
9
74°
53°
10
74°
55°
11
71°
50°
12
76°
45°
13
74°
49°
14
62°
44°
15
72°
39°
16
79°
58°
17
86°
62°
18
90°
69°
19
87°
68°
20
72°
53°
21
68°
58°
22
72°
65°
23
74°
59°
24
79°
61°
25
78°
60°
26
77°
61°
27
77°
59°
28
78°
58°
29
77°
57°
30
78°
58°
31
80°
55°
1
81°
59°
2
81°
58°
3
80°
58°
4
75°
55°
5
75°
53°
6
78°
60°
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 68° to 90°, with overnight lows between 53° and 69°. The average high for May is 78° with an average low of 59°. 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.
