S
M
T
W
T
F
S
26
76°
55°
27
77°
53°
28
85°
54°
29
81°
56°
30
84°
56°
31
89°
55°
1
89°
56°
2
91°
57°
3
86°
56°
4
79°
59°
5
78°
61°
6
78°
59°
7
78°
59°
8
75°
60°
9
84°
61°
10
83°
53°
11
81°
57°
12
84°
60°
13
74°
58°
14
75°
60°
15
75°
58°
16
78°
58°
17
77°
58°
18
77°
58°
19
76°
59°
20
76°
60°
21
79°
59°
22
85°
55°
23
89°
55°
24
79°
60°
25
79°
59°
26
83°
61°
27
83°
58°
28
79°
57°
29
75°
56°
30
76°
54°
31
78°
54°
1
78°
56°
2
80°
55°
3
80°
55°
4
81°
56°
5
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Atherton
Atherton's August 2026 forecast shows daily high temperatures ranging from 75° to 83°, with overnight lows between 54° and 61°. The average high for August is 79° with an average low of 57°. 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 Atherton. See also: September | October | November.