S
M
T
W
T
F
S
26
66°
45°
27
60°
43°
28
54°
36°
29
55°
41°
30
52°
40°
1
53°
35°
2
65°
32°
3
71°
51°
4
67°
45°
5
52°
35°
6
50°
36°
7
63°
36°
8
69°
47°
9
71°
39°
10
58°
38°
11
65°
49°
12
67°
44°
13
71°
49°
14
74°
48°
15
72°
51°
16
64°
47°
17
67°
48°
18
70°
48°
19
69°
49°
20
64°
45°
21
65°
46°
22
63°
46°
23
64°
49°
24
65°
55°
25
66°
55°
26
67°
51°
27
70°
54°
28
73°
54°
29
76°
57°
30
76°
58°
31
77°
58°
1
73°
52°
2
77°
60°
3
79°
61°
4
77°
57°
5
69°
55°
6
68°
57°
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 50° to 79°, with overnight lows between 36° and 61°. The average high for May is 69° with an average low of 50°. 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.
