S
M
T
W
T
F
S
26
77°
51°
27
83°
51°
28
83°
50°
29
84°
49°
30
83°
51°
31
84°
52°
1
85°
51°
2
81°
51°
3
83°
50°
4
81°
51°
5
83°
51°
6
84°
49°
7
81°
49°
8
80°
48°
9
83°
46°
10
79°
47°
11
82°
50°
12
83°
50°
13
77°
49°
14
81°
49°
15
80°
48°
16
75°
44°
17
75°
45°
18
76°
48°
19
81°
49°
20
82°
47°
21
74°
46°
22
73°
45°
23
73°
42°
24
74°
43°
25
73°
45°
26
72°
43°
27
71°
40°
28
70°
39°
29
72°
41°
30
72°
42°
31
73°
45°
1
73°
39°
2
71°
41°
3
72°
43°
4
71°
37°
5
69°
39°
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 69° to 85°, with overnight lows between 37° and 52°. The average high for August is 78° with an average low of 46°. 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.