S
M
T
W
T
F
S
26
89°
60°
27
88°
59°
28
86°
58°
29
89°
59°
30
89°
60°
31
88°
60°
1
88°
59°
2
89°
60°
3
87°
59°
4
85°
58°
5
84°
58°
6
83°
57°
7
83°
58°
8
86°
58°
9
85°
57°
10
85°
56°
11
82°
54°
12
82°
55°
13
83°
55°
14
82°
56°
15
83°
55°
16
83°
56°
17
85°
54°
18
86°
55°
19
86°
53°
20
84°
54°
21
86°
54°
22
85°
58°
23
85°
58°
24
86°
55°
25
85°
56°
26
85°
55°
27
86°
54°
28
85°
54°
29
84°
53°
30
85°
53°
31
90°
54°
1
90°
57°
2
85°
52°
3
83°
52°
4
84°
53°
5
84°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pleasanton
Pleasanton's August 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 52° and 60°. The average high for August is 85° with an average low of 56°. 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 Pleasanton. See also: September | October | November.
