S
M
T
W
T
F
S
26
53°
43°
27
N/A
28
64°
52°
29
61°
52°
30
64°
43°
1
61°
46°
2
56°
42°
3
60°
44°
4
65°
49°
5
70°
54°
6
69°
52°
7
70°
51°
8
67°
51°
9
66°
52°
10
68°
45°
11
68°
53°
12
69°
57°
13
69°
55°
14
68°
52°
15
67°
51°
16
65°
50°
17
66°
50°
18
68°
51°
19
72°
58°
20
73°
55°
21
70°
52°
22
69°
53°
23
70°
52°
24
71°
57°
25
78°
61°
26
76°
55°
27
71°
54°
28
71°
54°
29
72°
57°
30
75°
61°
31
80°
62°
1
77°
62°
2
81°
63°
3
82°
65°
4
82°
64°
5
81°
58°
6
74°
57°
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 56° to 82°, with overnight lows between 42° and 65°. The average high for May is 70° with an average low of 54°. 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.
