S
M
T
W
T
F
S
26
88°
56°
27
91°
58°
28
92°
58°
29
92°
57°
30
91°
58°
31
92°
58°
1
91°
57°
2
91°
58°
3
92°
58°
4
92°
57°
5
90°
56°
6
91°
57°
7
91°
57°
8
92°
58°
9
92°
58°
10
91°
57°
11
90°
56°
12
86°
56°
13
86°
55°
14
84°
54°
15
85°
55°
16
84°
55°
17
83°
54°
18
82°
52°
19
81°
52°
20
81°
54°
21
90°
56°
22
91°
53°
23
90°
54°
24
89°
53°
25
83°
50°
26
84°
48°
27
83°
46°
28
81°
49°
29
86°
47°
30
84°
46°
31
84°
48°
1
86°
51°
2
86°
51°
3
84°
50°
4
78°
50°
5
81°
49°
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 78° to 92°, with overnight lows between 46° and 58°. The average high for August is 87° with an average low of 54°. 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.