S
M
T
W
T
F
S
26
82°
64°
27
79°
59°
28
70°
48°
29
66°
43°
30
68°
43°
1
70°
45°
2
72°
45°
3
84°
43°
4
82°
57°
5
66°
50°
6
64°
46°
7
77°
43°
8
86°
46°
9
84°
46°
10
68°
50°
11
79°
43°
12
86°
46°
13
84°
59°
14
91°
61°
15
86°
66°
16
90°
64°
17
88°
72°
18
91°
64°
19
64°
57°
20
71°
56°
21
68°
60°
22
78°
57°
23
79°
59°
24
79°
61°
25
82°
60°
26
84°
64°
27
83°
62°
28
81°
62°
29
84°
63°
30
83°
64°
31
86°
61°
1
85°
62°
2
83°
65°
3
79°
61°
4
80°
59°
5
80°
66°
6
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hayward
Hayward's May 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 56° and 67°. The average high for May is 80° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hayward. See also: June | July | August.
