S
M
T
W
T
F
S
26
79°
49°
27
85°
51°
28
85°
54°
29
72°
62°
30
80°
63°
31
84°
63°
1
87°
61°
2
89°
68°
3
78°
63°
4
87°
58°
5
88°
59°
6
93°
67°
7
93°
72°
8
89°
69°
9
88°
61°
10
87°
67°
11
87°
59°
12
83°
61°
13
81°
58°
14
78°
55°
15
76°
54°
16
77°
54°
17
74°
56°
18
76°
59°
19
76°
60°
20
78°
60°
21
79°
61°
22
76°
64°
23
81°
61°
24
73°
57°
25
74°
58°
26
78°
60°
27
81°
60°
28
81°
57°
29
75°
54°
30
72°
52°
31
72°
51°
1
73°
51°
2
71°
55°
3
72°
56°
4
73°
57°
5
72°
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 88°, with overnight lows between 51° and 67°. The average high for August is 77° with an average low of 58°. 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.