S
M
T
W
T
F
S
26
55°
45°
27
72°
41°
28
63°
50°
29
59°
55°
30
66°
45°
1
68°
37°
2
59°
43°
3
63°
37°
4
79°
45°
5
84°
55°
6
72°
55°
7
66°
46°
8
73°
43°
9
75°
55°
10
81°
50°
11
63°
46°
12
72°
41°
13
75°
54°
14
63°
50°
15
72°
50°
16
84°
46°
17
87°
61°
18
97°
66°
19
98°
68°
20
91°
58°
21
65°
53°
22
63°
52°
23
67°
55°
24
72°
60°
25
73°
59°
26
77°
58°
27
78°
55°
28
77°
56°
29
80°
58°
30
81°
55°
31
80°
59°
1
81°
60°
2
79°
60°
3
74°
61°
4
78°
59°
5
75°
57°
6
77°
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 63° to 98°, with overnight lows between 52° and 68°. The average high for May is 79° 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.
