S
M
T
W
T
F
S
26
68°
60°
27
67°
58°
28
70°
58°
29
64°
58°
30
69°
58°
31
71°
58°
1
69°
58°
2
79°
58°
3
71°
59°
4
70°
58°
5
67°
60°
6
67°
60°
7
67°
58°
8
62°
58°
9
71°
58°
10
73°
58°
11
72°
59°
12
74°
60°
13
75°
61°
14
76°
60°
15
70°
58°
16
69°
60°
17
70°
59°
18
74°
61°
19
74°
61°
20
76°
60°
21
73°
61°
22
76°
59°
23
72°
60°
24
69°
58°
25
71°
58°
26
74°
60°
27
75°
61°
28
75°
61°
29
72°
60°
30
76°
60°
31
76°
59°
1
77°
61°
2
77°
61°
3
71°
60°
4
72°
59°
5
75°
60°
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 69° to 77°, with overnight lows between 58° and 61°. The average high for August is 73° with an average low of 60°. 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.