S
M
T
W
T
F
S
26
66°
34°
27
71°
36°
28
61°
36°
29
54°
44°
30
52°
43°
1
63°
38°
2
55°
37°
3
54°
37°
4
70°
47°
5
75°
57°
6
67°
49°
7
61°
44°
8
58°
38°
9
57°
42°
10
56°
42°
11
62°
44°
12
61°
43°
13
61°
44°
14
60°
48°
15
64°
47°
16
63°
52°
17
68°
48°
18
69°
50°
19
69°
49°
20
65°
49°
21
65°
48°
22
66°
50°
23
63°
47°
24
61°
45°
25
63°
46°
26
64°
51°
27
64°
48°
28
65°
47°
29
64°
45°
30
64°
48°
31
65°
52°
1
67°
50°
2
66°
47°
3
67°
53°
4
71°
53°
5
67°
52°
6
67°
54°
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 54° to 75°, with overnight lows between 37° and 57°. The average high for May is 64° with an average low of 48°. 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.
