S
M
T
W
T
F
S
26
59°
42°
27
60°
38°
28
61°
41°
29
60°
38°
30
60°
37°
1
65°
41°
2
61°
39°
3
62°
38°
4
66°
46°
5
71°
49°
6
71°
49°
7
74°
50°
8
75°
51°
9
75°
51°
10
74°
48°
11
64°
45°
12
65°
45°
13
68°
48°
14
65°
48°
15
66°
49°
16
67°
51°
17
66°
48°
18
69°
44°
19
71°
43°
20
67°
44°
21
68°
43°
22
68°
43°
23
69°
46°
24
69°
51°
25
71°
48°
26
71°
50°
27
79°
47°
28
70°
51°
29
71°
55°
30
81°
47°
31
72°
52°
1
72°
54°
2
74°
48°
3
73°
51°
4
77°
52°
5
81°
50°
6
73°
50°
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 59° to 81°, with overnight lows between 37° and 55°. The average high for May is 69° with an average low of 47°. 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.
