S
M
T
W
T
F
S
26
74°
59°
27
74°
57°
28
79°
58°
29
70°
58°
30
79°
53°
31
84°
52°
1
76°
57°
2
92°
53°
3
91°
53°
4
86°
54°
5
73°
57°
6
80°
57°
7
80°
58°
8
80°
58°
9
86°
59°
10
80°
58°
11
80°
58°
12
78°
60°
13
75°
60°
14
76°
61°
15
75°
60°
16
77°
59°
17
75°
60°
18
75°
61°
19
78°
60°
20
77°
57°
21
78°
59°
22
77°
58°
23
76°
60°
24
79°
60°
25
79°
59°
26
80°
61°
27
79°
61°
28
80°
60°
29
78°
60°
30
77°
61°
31
78°
61°
1
77°
58°
2
78°
59°
3
80°
59°
4
75°
60°
5
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hayward
Hayward's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 57° and 61°. The average high for August is 78° 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 Hayward. See also: September | October | November.