S
M
T
W
T
F
S
26
72°
53°
27
70°
52°
28
70°
53°
29
71°
53°
30
72°
54°
31
73°
54°
1
72°
55°
2
74°
55°
3
74°
54°
4
73°
55°
5
73°
55°
6
71°
54°
7
72°
54°
8
72°
53°
9
71°
53°
10
71°
52°
11
70°
53°
12
71°
53°
13
64°
52°
14
67°
48°
15
70°
49°
16
60°
46°
17
58°
41°
18
57°
47°
19
64°
50°
20
69°
51°
21
68°
48°
22
64°
44°
23
62°
40°
24
61°
43°
25
63°
39°
26
55°
40°
27
60°
39°
28
63°
40°
29
62°
47°
30
63°
45°
31
60°
42°
1
55°
40°
2
58°
43°
3
63°
48°
4
65°
47°
5
65°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Lac Brochet
Lac Brochet's August 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 39° and 55°. The average high for August is 66° with an average low of 49°. 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 Lac Brochet. See also: September | October | November.