S
M
T
W
T
F
S
26
62°
55°
27
63°
52°
28
66°
52°
29
66°
52°
30
66°
52°
1
63°
54°
2
61°
54°
3
65°
54°
4
64°
53°
5
65°
53°
6
67°
54°
7
62°
53°
8
60°
53°
9
64°
53°
10
64°
53°
11
72°
50°
12
62°
51°
13
65°
53°
14
66°
51°
15
66°
51°
16
66°
52°
17
73°
50°
18
80°
56°
19
82°
54°
20
73°
53°
21
70°
51°
22
69°
50°
23
69°
54°
24
71°
55°
25
66°
55°
26
64°
53°
27
70°
51°
28
67°
54°
29
63°
54°
30
65°
52°
31
72°
51°
1
71°
53°
2
67°
52°
3
70°
54°
4
67°
54°
5
71°
53°
6
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Bruno
San Bruno's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 San Bruno. See also: June | July | August.
