S
M
T
W
T
F
S
26
53°
43°
27
68°
38°
28
63°
42°
29
62°
52°
30
70°
51°
1
63°
45°
2
62°
48°
3
62°
43°
4
76°
49°
5
85°
62°
6
73°
63°
7
65°
50°
8
71°
48°
9
77°
56°
10
77°
55°
11
62°
47°
12
69°
43°
13
77°
54°
14
65°
55°
15
70°
51°
16
84°
53°
17
87°
64°
18
95°
64°
19
97°
72°
20
97°
70°
21
73°
57°
22
62°
55°
23
57°
54°
24
65°
57°
25
74°
61°
26
77°
65°
27
80°
68°
28
81°
60°
29
77°
54°
30
69°
51°
31
75°
58°
1
75°
54°
2
71°
52°
3
73°
55°
4
78°
62°
5
86°
66°
6
87°
68°
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 69° to 87°, with overnight lows between 51° and 68°. The average high for May is 77° with an average low of 58°. 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.
