S
M
T
W
T
F
S
26
76°
65°
27
75°
65°
28
76°
66°
29
75°
65°
30
76°
66°
31
76°
67°
1
77°
66°
2
76°
67°
3
76°
67°
4
77°
66°
5
76°
67°
6
76°
68°
7
77°
67°
8
76°
67°
9
76°
66°
10
75°
66°
11
76°
65°
12
76°
66°
13
77°
65°
14
79°
66°
15
80°
67°
16
79°
67°
17
80°
65°
18
79°
66°
19
78°
65°
20
79°
66°
21
79°
65°
22
78°
66°
23
78°
67°
24
80°
66°
25
80°
66°
26
79°
65°
27
79°
66°
28
78°
66°
29
79°
65°
30
79°
67°
31
80°
67°
1
80°
66°
2
79°
66°
3
79°
65°
4
78°
67°
5
80°
67°
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 75° to 80°, with overnight lows between 65° and 68°. The average high for August is 78° with an average low of 66°. 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.