S
M
T
W
T
F
S
26
77°
58°
27
77°
56°
28
81°
55°
29
75°
58°
30
80°
55°
31
85°
55°
1
79°
58°
2
90°
54°
3
88°
54°
4
76°
59°
5
72°
56°
6
73°
57°
7
72°
57°
8
75°
59°
9
74°
58°
10
71°
57°
11
70°
59°
12
73°
57°
13
72°
58°
14
71°
59°
15
70°
57°
16
74°
58°
17
73°
57°
18
71°
58°
19
69°
56°
20
70°
56°
21
74°
58°
22
74°
57°
23
72°
59°
24
75°
59°
25
76°
58°
26
76°
60°
27
75°
60°
28
76°
59°
29
74°
60°
30
73°
59°
31
74°
59°
1
73°
57°
2
74°
58°
3
76°
58°
4
72°
57°
5
72°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Leandro
San Leandro's August 2026 forecast shows daily high temperatures ranging from 69° to 76°, with overnight lows between 56° and 60°. The average high for August is 73° with an average low of 58°. 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 San Leandro. See also: September | October | November.