S
M
T
W
T
F
S
26
87°
67°
27
86°
67°
28
85°
66°
29
83°
62°
30
82°
60°
31
79°
60°
1
78°
59°
2
79°
60°
3
81°
66°
4
81°
62°
5
82°
64°
6
83°
67°
7
84°
65°
8
80°
63°
9
81°
60°
10
81°
60°
11
82°
62°
12
85°
65°
13
86°
66°
14
87°
67°
15
85°
66°
16
86°
66°
17
88°
65°
18
81°
58°
19
80°
57°
20
78°
57°
21
79°
58°
22
79°
57°
23
80°
57°
24
81°
58°
25
84°
58°
26
85°
60°
27
85°
60°
28
83°
57°
29
78°
56°
30
78°
56°
31
81°
60°
1
84°
54°
2
77°
55°
3
78°
56°
4
79°
61°
5
83°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in California
California's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 54° and 67°. The average high for August is 82° with an average low of 61°. 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 California. See also: September | October | November.
