S
M
T
W
T
F
S
26
61°
39°
27
72°
36°
28
64°
36°
29
63°
48°
30
61°
46°
1
64°
39°
2
59°
45°
3
61°
43°
4
73°
37°
5
82°
45°
6
68°
54°
7
64°
45°
8
63°
39°
9
63°
46°
10
73°
48°
11
63°
45°
12
68°
39°
13
71°
52°
14
65°
46°
15
66°
45°
16
80°
57°
17
85°
54°
18
81°
58°
19
90°
65°
20
79°
53°
21
69°
49°
22
71°
49°
23
69°
52°
24
70°
51°
25
69°
50°
26
72°
51°
27
68°
51°
28
69°
49°
29
68°
51°
30
69°
56°
31
75°
53°
1
69°
51°
2
70°
49°
3
68°
49°
4
70°
50°
5
71°
57°
6
76°
58°
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 90°, with overnight lows between 45° and 65°. The average high for May is 72° with an average low of 52°. 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.
