S
M
T
W
T
F
S
31
88°
79°
1
89°
79°
2
87°
78°
3
87°
78°
4
87°
78°
5
88°
79°
6
88°
78°
7
89°
79°
8
88°
79°
9
89°
78°
10
89°
79°
11
91°
78°
12
90°
79°
13
90°
78°
14
90°
79°
15
91°
79°
16
91°
77°
17
88°
80°
18
90°
79°
19
89°
78°
20
87°
79°
21
88°
79°
22
87°
79°
23
83°
76°
24
84°
77°
25
89°
79°
26
88°
79°
27
89°
78°
28
88°
79°
29
89°
80°
30
88°
78°
1
N/A
2
88°
80°
3
87°
79°
4
87°
81°
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 87° to 88°, with overnight lows between 79° and 81°. The average high for June is 87° with an average low of 80°. 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.
