S
M
T
W
T
F
S
26
82°
51°
27
81°
51°
28
81°
51°
29
80°
57°
30
78°
57°
31
81°
53°
1
82°
58°
2
86°
58°
3
88°
56°
4
80°
56°
5
84°
55°
6
84°
56°
7
88°
58°
8
90°
56°
9
82°
55°
10
76°
54°
11
77°
55°
12
76°
56°
13
77°
55°
14
78°
56°
15
78°
55°
16
80°
56°
17
77°
54°
18
77°
54°
19
76°
53°
20
76°
53°
21
81°
55°
22
80°
54°
23
78°
56°
24
81°
56°
25
82°
55°
26
82°
57°
27
81°
57°
28
82°
56°
29
81°
57°
30
80°
56°
31
81°
56°
1
80°
53°
2
81°
54°
3
83°
54°
4
78°
55°
5
78°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in American Canyon
American Canyon's August 2026 forecast shows daily high temperatures ranging from 76° to 90°, with overnight lows between 53° and 58°. The average high for August is 80° 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 American Canyon. See also: September | October | November.
