S
M
T
W
T
F
S
31
72°
51°
1
71°
53°
2
67°
52°
3
70°
54°
4
67°
54°
5
71°
53°
6
64°
52°
7
67°
51°
8
65°
52°
9
68°
55°
10
79°
54°
11
91°
59°
12
74°
56°
13
72°
55°
14
76°
58°
15
69°
58°
16
71°
59°
17
69°
58°
18
69°
59°
19
69°
58°
20
68°
55°
21
68°
57°
22
68°
55°
23
69°
56°
24
72°
57°
25
73°
57°
26
72°
56°
27
73°
57°
28
74°
58°
29
72°
54°
30
75°
55°
1
72°
54°
2
71°
55°
3
71°
55°
4
75°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in San Bruno
San Bruno's June 2026 forecast shows daily high temperatures ranging from 68° to 75°, with overnight lows between 54° and 59°. The average high for June is 71° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in San Bruno. See also: July | August | September.