S
M
T
W
T
F
S
26
46°
31°
27
48°
27°
28
51°
31°
29
53°
30°
30
49°
33°
1
57°
29°
2
68°
34°
3
69°
39°
4
62°
34°
5
36°
29°
6
38°
25°
7
63°
38°
8
65°
42°
9
65°
43°
10
67°
37°
11
81°
44°
12
71°
47°
13
84°
46°
14
78°
57°
15
79°
51°
16
74°
55°
17
61°
39°
18
41°
32°
19
50°
30°
20
56°
39°
21
62°
40°
22
65°
37°
23
72°
46°
24
76°
48°
25
79°
47°
26
76°
46°
27
67°
45°
28
69°
44°
29
72°
45°
30
71°
44°
31
73°
48°
1
74°
47°
2
72°
46°
3
69°
47°
4
73°
45°
5
67°
46°
6
69°
47°
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 79°, with overnight lows between 37° and 48°. The average high for May is 72° 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.
