S
M
T
W
T
F
S
26
63°
46°
27
78°
46°
28
71°
55°
29
61°
46°
30
56°
40°
1
50°
36°
2
48°
33°
3
62°
31°
4
75°
45°
5
71°
46°
6
57°
39°
7
58°
38°
8
67°
43°
9
73°
53°
10
64°
48°
11
68°
36°
12
73°
42°
13
65°
43°
14
62°
40°
15
64°
55°
16
80°
61°
17
80°
63°
18
89°
67°
19
77°
60°
20
72°
49°
21
70°
50°
22
71°
48°
23
69°
51°
24
72°
52°
25
75°
57°
26
76°
65°
27
76°
60°
28
79°
60°
29
79°
60°
30
77°
57°
31
71°
54°
1
72°
52°
2
72°
52°
3
73°
53°
4
73°
54°
5
79°
62°
6
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in New Dover
New Dover's May 2026 forecast shows daily high temperatures ranging from 62° to 89°, with overnight lows between 40° and 67°. The average high for May is 74° with an average low of 56°. 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 New Dover. See also: June | July | August.