S
M
T
W
T
F
S
26
85°
65°
27
85°
65°
28
84°
64°
29
84°
63°
30
82°
62°
31
75°
58°
1
74°
56°
2
74°
56°
3
75°
56°
4
76°
62°
5
77°
62°
6
80°
63°
7
78°
62°
8
76°
60°
9
76°
58°
10
76°
54°
11
76°
53°
12
78°
62°
13
76°
64°
14
84°
61°
15
83°
58°
16
79°
62°
17
83°
58°
18
79°
56°
19
79°
53°
20
72°
51°
21
73°
50°
22
73°
50°
23
78°
52°
24
79°
54°
25
80°
54°
26
80°
56°
27
81°
59°
28
81°
55°
29
80°
57°
30
81°
58°
31
79°
51°
1
78°
47°
2
71°
48°
3
70°
53°
4
74°
57°
5
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Montréal-Est
Montréal-Est's August 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 47° and 65°. The average high for August is 78° 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 Montréal-Est. See also: September | October | November.
