S
M
T
W
T
F
S
26
78°
56°
27
75°
58°
28
76°
56°
29
74°
61°
30
78°
56°
31
75°
58°
1
76°
58°
2
75°
60°
3
75°
62°
4
76°
56°
5
78°
56°
6
74°
58°
7
75°
59°
8
74°
60°
9
75°
64°
10
81°
62°
11
80°
61°
12
81°
62°
13
80°
61°
14
80°
62°
15
81°
61°
16
81°
61°
17
80°
60°
18
80°
62°
19
81°
61°
20
74°
54°
21
71°
53°
22
Hist. Avg.
75°
56°
23
Hist. Avg.
75°
56°
24
Hist. Avg.
75°
56°
25
Hist. Avg.
74°
55°
26
Hist. Avg.
74°
55°
27
Hist. Avg.
74°
55°
28
Hist. Avg.
73°
55°
29
Hist. Avg.
73°
54°
30
Hist. Avg.
73°
54°
31
Hist. Avg.
72°
54°
1
Hist. Avg.
72°
53°
2
Hist. Avg.
71°
53°
3
Hist. Avg.
71°
53°
4
Hist. Avg.
71°
52°
5
Hist. Avg.
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Montreal / Aéroparc Île Perrot
Montreal / Aéroparc Île Perrot's August 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 53° and 64°. The average high for August is 77° with an average low of 59°. 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 Montreal / Aéroparc Île Perrot. See also: September | October | November.
