S
M
T
W
T
F
S
26
92°
74°
27
83°
76°
28
93°
77°
29
89°
78°
30
86°
73°
31
90°
77°
1
89°
76°
2
84°
75°
3
86°
74°
4
91°
74°
5
91°
72°
6
92°
72°
7
91°
71°
8
94°
74°
9
92°
74°
10
N/A
11
94°
75°
12
93°
74°
13
93°
74°
14
93°
75°
15
94°
74°
16
92°
76°
17
99°
77°
18
98°
78°
19
98°
77°
20
93°
76°
21
99°
75°
22
98°
74°
23
97°
75°
24
98°
76°
25
90°
76°
26
91°
75°
27
91°
75°
28
90°
76°
29
91°
76°
30
92°
75°
31
93°
76°
1
93°
76°
2
94°
75°
3
94°
76°
4
93°
75°
5
94°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Dover
Dover's August 2026 forecast shows daily high temperatures ranging from 90° to 99°, with overnight lows between 74° and 78°. The average high for August is 94° with an average low of 76°. 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.