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
73°
59°
6
75°
58°
7
74°
58°
8
77°
59°
9
80°
58°
10
73°
59°
11
69°
60°
12
70°
58°
13
72°
59°
14
71°
60°
15
70°
58°
16
71°
59°
17
73°
58°
18
71°
59°
19
70°
57°
20
70°
57°
21
74°
59°
22
74°
58°
23
72°
60°
24
75°
60°
25
76°
59°
26
76°
61°
27
75°
61°
28
76°
60°
29
73°
61°
30
74°
60°
31
75°
60°
1
74°
58°
2
75°
59°
3
77°
59°
4
72°
60°
5
72°
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 80°, with overnight lows between 57° and 61°. The average high for August is 73° with an average low of 59°. 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.