S
M
T
W
T
F
S
26
77°
61°
27
76°
60°
28
76°
61°
29
80°
60°
30
78°
60°
31
80°
61°
1
82°
61°
2
81°
60°
3
79°
61°
4
81°
60°
5
75°
56°
6
80°
59°
7
81°
56°
8
74°
53°
9
72°
52°
10
73°
55°
11
74°
58°
12
76°
54°
13
75°
60°
14
76°
61°
15
81°
58°
16
72°
56°
17
73°
50°
18
73°
52°
19
74°
58°
20
75°
56°
21
75°
51°
22
74°
49°
23
75°
49°
24
72°
48°
25
71°
49°
26
74°
49°
27
77°
51°
28
77°
52°
29
76°
56°
30
77°
56°
31
77°
55°
1
76°
57°
2
78°
51°
3
74°
47°
4
67°
45°
5
66°
54°
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 66° to 82°, with overnight lows between 45° and 61°. The average high for August is 76° with an average low of 55°. 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.
