S
M
T
W
T
F
S
31
76°
55°
1
82°
55°
2
78°
56°
3
78°
56°
4
79°
59°
5
78°
57°
6
79°
56°
7
85°
54°
8
74°
56°
9
73°
53°
10
73°
52°
11
74°
53°
12
73°
53°
13
73°
52°
14
74°
53°
15
75°
54°
16
75°
56°
17
77°
56°
18
75°
57°
19
82°
61°
20
85°
61°
21
83°
59°
22
79°
59°
23
77°
58°
24
78°
55°
25
76°
53°
26
76°
54°
27
77°
53°
28
82°
57°
29
79°
56°
30
76°
55°
1
77°
55°
2
76°
56°
3
77°
54°
4
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in San Jose
San Jose's June 2026 forecast shows daily high temperatures ranging from 73° to 85°, with overnight lows between 52° and 61°. The average high for June is 77° 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 Jose. See also: July | August | September.