S
M
T
W
T
F
S
26
90°
73°
27
90°
72°
28
88°
73°
29
88°
73°
30
90°
72°
31
91°
73°
1
92°
73°
2
92°
72°
3
94°
66°
4
89°
67°
5
92°
71°
6
94°
67°
7
93°
66°
8
89°
67°
9
88°
66°
10
88°
68°
11
89°
72°
12
94°
71°
13
95°
71°
14
89°
69°
15
87°
71°
16
88°
69°
17
92°
70°
18
88°
66°
19
86°
68°
20
87°
67°
21
88°
69°
22
89°
71°
23
91°
69°
24
92°
69°
25
91°
68°
26
92°
69°
27
90°
70°
28
88°
69°
29
87°
68°
30
90°
66°
31
86°
62°
1
84°
61°
2
84°
61°
3
85°
65°
4
88°
67°
5
89°
64°
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 84° to 95°, with overnight lows between 61° and 73°. The average high for August is 89° with an average low of 69°. 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.