S
M
T
W
T
F
S
26
80°
66°
27
82°
70°
28
88°
71°
29
86°
72°
30
86°
73°
31
86°
74°
1
89°
71°
2
91°
77°
3
90°
76°
4
85°
75°
5
91°
76°
6
93°
76°
7
93°
77°
8
93°
77°
9
94°
77°
10
94°
74°
11
90°
73°
12
86°
75°
13
91°
74°
14
94°
79°
15
83°
75°
16
88°
73°
17
91°
75°
18
91°
73°
19
90°
72°
20
94°
75°
21
86°
73°
22
84°
72°
23
84°
70°
24
82°
69°
25
84°
71°
26
83°
68°
27
83°
70°
28
86°
69°
29
83°
67°
30
82°
68°
31
80°
69°
1
79°
68°
2
79°
68°
3
80°
70°
4
79°
67°
5
79°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Chesapeake
Chesapeake's August 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 67° and 75°. The average high for August is 84° with an average low of 70°. 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 Chesapeake. See also: September | October | November.