S
M
T
W
T
F
S
26
99°
66°
27
90°
61°
28
91°
64°
29
95°
68°
30
88°
68°
31
79°
64°
1
84°
59°
2
86°
63°
3
88°
59°
4
73°
52°
5
82°
48°
6
86°
57°
7
79°
55°
8
84°
50°
9
81°
57°
10
82°
50°
11
84°
61°
12
84°
61°
13
84°
64°
14
84°
63°
15
82°
68°
16
81°
57°
17
88°
54°
18
79°
54°
19
81°
54°
20
90°
63°
21
82°
55°
22
79°
52°
23
81°
48°
24
86°
61°
25
82°
60°
26
80°
52°
27
79°
53°
28
82°
65°
29
82°
66°
30
82°
57°
31
82°
55°
1
76°
55°
2
79°
54°
3
81°
58°
4
79°
57°
5
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Campbell
Campbell's August 2026 forecast shows daily high temperatures ranging from 76° to 82°, with overnight lows between 52° and 66°. The average high for August is 80° 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 Campbell. See also: September | October | November.