S
M
T
W
T
F
S
26
87°
57°
27
85°
54°
28
83°
54°
29
87°
53°
30
88°
64°
31
73°
60°
1
81°
57°
2
82°
53°
3
85°
52°
4
75°
51°
5
78°
43°
6
82°
46°
7
81°
54°
8
79°
45°
9
80°
50°
10
82°
53°
11
84°
53°
12
82°
56°
13
79°
53°
14
76°
56°
15
72°
56°
16
78°
51°
17
79°
56°
18
80°
55°
19
80°
57°
20
83°
56°
21
80°
57°
22
79°
54°
23
78°
53°
24
77°
59°
25
81°
59°
26
82°
58°
27
81°
57°
28
78°
53°
29
74°
49°
30
71°
52°
31
72°
55°
1
74°
56°
2
74°
58°
3
80°
57°
4
79°
58°
5
77°
57°
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 71° to 84°, with overnight lows between 49° and 59°. The average high for August is 78° with an average low of 55°. 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.