S
M
T
W
T
F
S
26
86°
62°
27
86°
63°
28
77°
62°
29
79°
67°
30
80°
65°
31
81°
64°
1
82°
65°
2
83°
69°
3
77°
63°
4
82°
62°
5
85°
60°
6
84°
66°
7
84°
69°
8
84°
66°
9
80°
66°
10
79°
65°
11
80°
61°
12
76°
62°
13
75°
58°
14
74°
56°
15
75°
58°
16
72°
59°
17
75°
61°
18
80°
62°
19
79°
61°
20
78°
60°
21
77°
60°
22
77°
59°
23
74°
60°
24
77°
55°
25
74°
59°
26
78°
60°
27
78°
60°
28
76°
55°
29
69°
52°
30
68°
51°
31
67°
49°
1
68°
48°
2
68°
49°
3
68°
57°
4
72°
57°
5
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brossard
Brossard's August 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 48° and 62°. The average high for August is 74° with an average low of 57°. 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 Brossard. See also: September | October | November.