S
M
T
W
T
F
S
26
90°
62°
27
91°
64°
28
93°
65°
29
93°
64°
30
94°
64°
31
95°
67°
1
96°
67°
2
96°
68°
3
95°
67°
4
95°
67°
5
94°
65°
6
93°
66°
7
94°
66°
8
95°
65°
9
94°
67°
10
95°
64°
11
93°
60°
12
93°
59°
13
92°
60°
14
92°
66°
15
94°
65°
16
94°
66°
17
96°
66°
18
97°
65°
19
96°
66°
20
96°
66°
21
95°
65°
22
96°
65°
23
96°
64°
24
95°
64°
25
94°
65°
26
94°
64°
27
93°
64°
28
92°
60°
29
91°
59°
30
89°
62°
31
90°
60°
1
91°
59°
2
90°
58°
3
88°
56°
4
86°
57°
5
86°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Alameda
Alameda's August 2026 forecast shows daily high temperatures ranging from 86° to 97°, with overnight lows between 56° and 68°. The average high for August is 93° with an average low of 63°. 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 Alameda. See also: September | October | November.