S
M
T
W
T
F
S
26
61°
53°
27
62°
52°
28
63°
52°
29
65°
52°
30
63°
52°
1
60°
53°
2
59°
53°
3
63°
53°
4
62°
54°
5
61°
52°
6
65°
55°
7
59°
52°
8
60°
52°
9
63°
52°
10
62°
52°
11
66°
52°
12
58°
51°
13
63°
53°
14
66°
52°
15
65°
51°
16
64°
52°
17
71°
51°
18
79°
65°
19
82°
53°
20
66°
51°
21
63°
54°
22
61°
56°
23
61°
55°
24
59°
52°
25
62°
51°
26
62°
53°
27
64°
54°
28
64°
53°
29
63°
53°
30
63°
55°
31
65°
53°
1
66°
52°
2
69°
56°
3
68°
56°
4
70°
55°
5
70°
56°
6
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hayes Valley
Hayes Valley's May 2026 forecast shows daily high temperatures ranging from 59° to 82°, with overnight lows between 51° and 56°. The average high for May is 66° with an average low of 54°. 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 Hayes Valley. See also: June | July | August.
