S
M
T
W
T
F
S
26
82°
63°
27
81°
57°
28
77°
63°
29
78°
61°
30
77°
60°
31
77°
62°
1
78°
62°
2
79°
63°
3
80°
63°
4
79°
62°
5
81°
62°
6
77°
59°
7
78°
59°
8
76°
60°
9
76°
61°
10
76°
60°
11
77°
55°
12
76°
58°
13
77°
62°
14
78°
61°
15
76°
59°
16
75°
58°
17
76°
58°
18
76°
61°
19
77°
61°
20
81°
62°
21
80°
61°
22
80°
60°
23
75°
59°
24
84°
59°
25
81°
58°
26
81°
57°
27
83°
52°
28
75°
51°
29
73°
52°
30
72°
50°
31
71°
49°
1
73°
52°
2
73°
56°
3
72°
59°
4
80°
59°
5
81°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Dover
Dover's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 49° and 63°. The average high for August is 78° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Dover. See also: September | October | November.