S
M
T
W
T
F
S
26
98°
76°
27
96°
74°
28
99°
72°
29
96°
73°
30
98°
74°
31
96°
72°
1
97°
73°
2
97°
72°
3
96°
74°
4
98°
74°
5
96°
73°
6
96°
72°
7
95°
71°
8
96°
72°
9
96°
72°
10
97°
74°
11
96°
74°
12
97°
73°
13
98°
72°
14
98°
72°
15
99°
73°
16
98°
72°
17
99°
73°
18
98°
75°
19
100°
77°
20
101°
73°
21
98°
74°
22
98°
74°
23
98°
75°
24
97°
76°
25
98°
76°
26
98°
75°
27
97°
73°
28
98°
72°
29
98°
72°
30
97°
74°
31
98°
74°
1
98°
75°
2
97°
74°
3
97°
72°
4
96°
73°
5
94°
73°
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 94° to 101°, with overnight lows between 71° and 77°. The average high for August is 97° with an average low of 73°. 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.
