S
M
T
W
T
F
S
26
80°
61°
27
81°
62°
28
81°
61°
29
80°
59°
30
78°
59°
31
76°
58°
1
75°
57°
2
74°
57°
3
75°
59°
4
78°
61°
5
79°
61°
6
80°
60°
7
80°
61°
8
79°
61°
9
77°
60°
10
80°
61°
11
81°
61°
12
80°
60°
13
82°
62°
14
81°
61°
15
81°
60°
16
80°
62°
17
79°
64°
18
80°
63°
19
81°
61°
20
81°
59°
21
80°
57°
22
78°
56°
23
78°
56°
24
77°
57°
25
79°
55°
26
79°
58°
27
78°
57°
28
78°
56°
29
76°
55°
30
77°
57°
31
76°
59°
1
78°
58°
2
81°
59°
3
77°
55°
4
76°
56°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mountain View
Mountain View's August 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 54° and 64°. The average high for August is 79° with an average low of 59°. 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 Mountain View. See also: September | October | November.