S
M
T
W
T
F
S
26
83°
65°
27
80°
60°
28
71°
52°
29
67°
45°
30
70°
45°
1
70°
47°
2
73°
47°
3
88°
51°
4
86°
60°
5
72°
50°
6
66°
48°
7
79°
45°
8
89°
51°
9
88°
48°
10
67°
53°
11
79°
45°
12
88°
54°
13
85°
61°
14
95°
63°
15
90°
71°
16
92°
66°
17
92°
73°
18
85°
53°
19
65°
56°
20
71°
57°
21
72°
62°
22
78°
60°
23
82°
62°
24
86°
63°
25
83°
64°
26
85°
66°
27
84°
64°
28
84°
64°
29
85°
63°
30
85°
66°
31
87°
63°
1
86°
67°
2
84°
67°
3
81°
62°
4
81°
61°
5
82°
67°
6
86°
69°
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 65° to 87°, with overnight lows between 53° and 69°. The average high for May is 82° with an average low of 63°. 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.
