S
M
T
W
T
F
S
26
78°
56°
27
75°
55°
28
77°
56°
29
79°
57°
30
80°
57°
31
80°
55°
1
69°
55°
2
72°
54°
3
78°
56°
4
79°
56°
5
79°
55°
6
70°
54°
7
73°
55°
8
77°
56°
9
77°
55°
10
75°
55°
11
68°
54°
12
67°
54°
13
67°
53°
14
68°
54°
15
69°
54°
16
73°
53°
17
71°
54°
18
72°
54°
19
75°
53°
20
77°
54°
21
74°
52°
22
77°
52°
23
75°
42°
24
66°
40°
25
64°
39°
26
63°
40°
27
63°
41°
28
65°
46°
29
72°
51°
30
73°
48°
31
64°
44°
1
68°
46°
2
70°
44°
3
67°
46°
4
71°
48°
5
72°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Big Valley
Big Valley's August 2026 forecast shows daily high temperatures ranging from 63° to 80°, with overnight lows between 39° and 57°. The average high for August is 72° with an average low of 51°. 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 Big Valley. See also: September | October | November.
