S
M
T
W
T
F
S
26
51°
41°
27
53°
41°
28
57°
39°
29
47°
32°
30
43°
26°
1
50°
22°
2
61°
22°
3
68°
46°
4
60°
41°
5
47°
33°
6
43°
33°
7
53°
28°
8
65°
24°
9
54°
30°
10
52°
27°
11
61°
21°
12
69°
45°
13
67°
39°
14
73°
30°
15
84°
42°
16
78°
43°
17
64°
56°
18
69°
46°
19
55°
37°
20
58°
38°
21
64°
45°
22
69°
50°
23
73°
48°
24
75°
52°
25
72°
49°
26
74°
51°
27
75°
55°
28
73°
45°
29
66°
46°
30
66°
46°
31
68°
45°
1
68°
43°
2
69°
45°
3
69°
53°
4
74°
55°
5
80°
56°
6
80°
55°
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 55° to 84°, with overnight lows between 37° and 56°. The average high for May is 71° with an average low of 48°. 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.
