S
M
T
W
T
F
S
26
76°
57°
27
75°
58°
28
73°
57°
29
72°
56°
30
79°
57°
31
71°
56°
1
74°
50°
2
71°
51°
3
69°
50°
4
69°
50°
5
71°
51°
6
71°
50°
7
74°
50°
8
75°
53°
9
76°
57°
10
77°
56°
11
73°
56°
12
78°
58°
13
79°
58°
14
77°
53°
15
75°
47°
16
69°
51°
17
74°
47°
18
68°
48°
19
67°
47°
20
69°
49°
21
71°
52°
22
71°
51°
23
69°
49°
24
72°
55°
25
71°
47°
26
70°
51°
27
72°
48°
28
68°
47°
29
66°
48°
30
65°
48°
31
64°
46°
1
67°
45°
2
65°
45°
3
65°
52°
4
70°
48°
5
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Rivière-à-Pierre
Rivière-à-Pierre's August 2026 forecast shows daily high temperatures ranging from 64° to 79°, with overnight lows between 44° and 58°. The average high for August is 71° 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 Rivière-à-Pierre. See also: September | October | November.