S
M
T
W
T
F
S
26
79°
63°
27
79°
60°
28
72°
50°
29
71°
51°
30
67°
49°
1
67°
47°
2
69°
50°
3
70°
49°
4
73°
52°
5
75°
56°
6
70°
54°
7
71°
54°
8
77°
58°
9
77°
58°
10
76°
57°
11
79°
59°
12
79°
60°
13
78°
56°
14
71°
51°
15
71°
54°
16
76°
58°
17
80°
61°
18
79°
60°
19
78°
53°
20
71°
52°
21
72°
52°
22
76°
60°
23
78°
58°
24
82°
62°
25
83°
63°
26
83°
63°
27
82°
62°
28
83°
64°
29
83°
64°
30
80°
63°
31
81°
62°
1
83°
62°
2
81°
64°
3
82°
62°
4
80°
58°
5
79°
59°
6
84°
61°
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 67° to 84°, with overnight lows between 47° and 64°. The average high for May is 77° with an average low of 57°. 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.
