S
M
T
W
T
F
S
26
84°
70°
27
85°
67°
28
86°
66°
29
84°
69°
30
85°
70°
31
88°
71°
1
86°
66°
2
85°
66°
3
84°
67°
4
83°
65°
5
83°
65°
6
84°
64°
7
83°
65°
8
83°
66°
9
84°
69°
10
83°
71°
11
83°
70°
12
85°
68°
13
86°
70°
14
88°
64°
15
88°
64°
16
83°
68°
17
85°
68°
18
87°
64°
19
83°
65°
20
82°
64°
21
81°
68°
22
83°
64°
23
82°
69°
24
82°
69°
25
86°
68°
26
85°
70°
27
87°
70°
28
87°
69°
29
86°
69°
30
87°
62°
31
82°
63°
1
81°
64°
2
81°
65°
3
82°
66°
4
80°
62°
5
85°
63°
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 80° to 88°, with overnight lows between 62° and 71°. The average high for August is 84° with an average low of 67°. 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.