S
M
T
W
T
F
S
26
91°
57°
27
89°
58°
28
91°
59°
29
86°
59°
30
82°
57°
31
87°
59°
1
89°
58°
2
87°
59°
3
90°
59°
4
91°
58°
5
90°
59°
6
87°
59°
7
90°
58°
8
91°
59°
9
84°
52°
10
79°
50°
11
79°
50°
12
80°
51°
13
80°
53°
14
81°
52°
15
87°
55°
16
87°
56°
17
79°
47°
18
80°
47°
19
84°
48°
20
88°
50°
21
88°
49°
22
85°
56°
23
88°
55°
24
88°
54°
25
85°
52°
26
77°
45°
27
75°
44°
28
75°
46°
29
76°
46°
30
73°
43°
31
73°
47°
1
76°
47°
2
82°
48°
3
85°
49°
4
84°
46°
5
77°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oroville
Oroville's August 2026 forecast shows daily high temperatures ranging from 73° to 91°, with overnight lows between 43° and 59°. The average high for August is 84° with an average low of 52°. 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 Oroville. See also: September | October | November.