S
M
T
W
T
F
S
26
65°
53°
27
64°
53°
28
65°
52°
29
65°
52°
30
66°
53°
31
66°
51°
1
65°
49°
2
64°
49°
3
64°
51°
4
65°
53°
5
65°
50°
6
64°
49°
7
69°
49°
8
71°
54°
9
69°
55°
10
71°
54°
11
72°
51°
12
69°
50°
13
70°
51°
14
69°
51°
15
67°
50°
16
68°
51°
17
69°
53°
18
66°
48°
19
67°
50°
20
67°
48°
21
68°
50°
22
68°
54°
23
71°
54°
24
71°
53°
25
67°
47°
26
65°
46°
27
64°
45°
28
62°
45°
29
63°
47°
30
65°
46°
31
64°
47°
1
65°
51°
2
65°
51°
3
66°
46°
4
67°
47°
5
67°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Jacques
St. Jacques's August 2026 forecast shows daily high temperatures ranging from 62° to 72°, with overnight lows between 45° and 55°. The average high for August is 67° 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 St. Jacques. See also: September | October | November.