S
M
T
W
T
F
S
27
82°
78°
28
87°
78°
29
88°
79°
30
88°
78°
31
88°
78°
1
87°
78°
2
88°
77°
3
86°
77°
4
88°
81°
5
88°
77°
6
85°
77°
7
88°
79°
8
88°
77°
9
88°
75°
10
86°
75°
11
88°
79°
12
85°
76°
13
88°
75°
14
86°
77°
15
90°
79°
16
90°
81°
17
90°
81°
18
90°
77°
19
88°
81°
20
89°
77°
21
89°
77°
22
84°
77°
23
87°
76°
24
89°
79°
25
88°
77°
26
85°
76°
27
89°
77°
28
82°
76°
29
89°
79°
30
88°
74°
31
89°
79°
1
87°
78°
2
88°
74°
3
84°
78°
4
88°
78°
5
87°
79°
6
88°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in San Jose
San Jose's August 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August 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 August weather will actually feel in San Jose. See also: September | October | November.
