S
M
T
W
T
F
S
26
79°
57°
27
76°
56°
28
75°
56°
29
76°
55°
30
74°
52°
31
74°
56°
1
79°
56°
2
76°
55°
3
74°
55°
4
77°
56°
5
72°
56°
6
75°
55°
7
78°
54°
8
73°
49°
9
70°
48°
10
70°
48°
11
71°
50°
12
70°
47°
13
70°
51°
14
71°
56°
15
78°
55°
16
71°
53°
17
70°
49°
18
69°
47°
19
73°
53°
20
72°
54°
21
70°
47°
22
73°
45°
23
72°
44°
24
68°
43°
25
69°
45°
26
76°
49°
27
76°
44°
28
74°
48°
29
75°
52°
30
75°
49°
31
74°
47°
1
73°
49°
2
73°
47°
3
66°
43°
4
65°
40°
5
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Kamouraska
Kamouraska's August 2026 forecast shows daily high temperatures ranging from 65° to 79°, with overnight lows between 40° and 57°. The average high for August is 73° with an average low of 50°. 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 Kamouraska. See also: September | October | November.