S
M
T
W
T
F
S
26
73°
57°
27
73°
57°
28
74°
58°
29
74°
58°
30
73°
57°
31
74°
57°
1
77°
58°
2
79°
59°
3
75°
59°
4
73°
57°
5
73°
57°
6
74°
58°
7
74°
58°
8
75°
59°
9
75°
60°
10
78°
57°
11
76°
56°
12
79°
55°
13
78°
58°
14
80°
61°
15
79°
60°
16
80°
62°
17
80°
62°
18
81°
61°
19
81°
62°
20
80°
62°
21
80°
60°
22
81°
61°
23
81°
60°
24
80°
61°
25
80°
61°
26
81°
62°
27
81°
60°
28
80°
61°
29
80°
59°
30
79°
59°
31
79°
57°
1
78°
56°
2
76°
55°
3
75°
54°
4
76°
53°
5
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Los Altos
Los Altos's August 2026 forecast shows daily high temperatures ranging from 73° to 81°, with overnight lows between 53° and 62°. The average high for August is 77° 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 Los Altos. See also: September | October | November.