S
M
T
W
T
F
S
26
52°
32°
27
55°
34°
28
61°
34°
29
64°
36°
30
70°
34°
1
74°
41°
2
76°
42°
3
77°
45°
4
78°
44°
5
75°
45°
6
81°
48°
7
78°
48°
8
76°
48°
9
71°
46°
10
68°
43°
11
69°
45°
12
71°
46°
13
72°
46°
14
66°
41°
15
68°
42°
16
68°
44°
17
66°
44°
18
64°
43°
19
65°
46°
20
63°
47°
21
62°
44°
22
61°
40°
23
62°
41°
24
67°
46°
25
70°
43°
26
72°
48°
27
73°
50°
28
72°
49°
29
70°
46°
30
69°
49°
31
66°
50°
1
66°
47°
2
68°
47°
3
73°
50°
4
69°
49°
5
69°
47°
6
72°
51°
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 61° to 81°, with overnight lows between 40° and 51°. The average high for May is 70° with an average low of 46°. 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.
