S
M
T
W
T
F
S
26
77°
57°
27
87°
71°
28
81°
65°
29
73°
55°
30
67°
53°
1
74°
48°
2
74°
44°
3
82°
41°
4
80°
60°
5
75°
56°
6
64°
50°
7
73°
47°
8
79°
49°
9
85°
58°
10
77°
61°
11
78°
53°
12
82°
47°
13
85°
54°
14
81°
49°
15
89°
58°
16
85°
71°
17
85°
70°
18
84°
73°
19
78°
66°
20
75°
66°
21
73°
67°
22
77°
67°
23
82°
65°
24
81°
67°
25
80°
69°
26
85°
68°
27
83°
68°
28
84°
67°
29
84°
63°
30
85°
64°
31
84°
64°
1
87°
68°
2
86°
67°
3
84°
65°
4
81°
61°
5
83°
65°
6
87°
69°
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 73° to 87°, with overnight lows between 61° and 73°. The average high for May is 82° with an average low of 66°. 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.
