S
M
T
W
T
F
S
26
84°
57°
27
84°
57°
28
81°
59°
29
78°
63°
30
70°
57°
31
75°
57°
1
80°
64°
2
77°
64°
3
75°
56°
4
78°
59°
5
80°
60°
6
80°
61°
7
78°
59°
8
79°
59°
9
76°
58°
10
75°
56°
11
73°
57°
12
75°
52°
13
75°
56°
14
75°
56°
15
69°
52°
16
67°
48°
17
67°
54°
18
68°
51°
19
66°
50°
20
67°
50°
21
68°
51°
22
66°
47°
23
66°
48°
24
67°
47°
25
65°
48°
26
65°
47°
27
66°
49°
28
65°
47°
29
66°
45°
30
65°
50°
31
67°
53°
1
71°
54°
2
68°
54°
3
69°
49°
4
66°
46°
5
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sainte-Marie
Sainte-Marie's August 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 45° and 64°. The average high for August is 71° with an average low of 53°. 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 Sainte-Marie. See also: September | October | November.