S
M
T
W
T
F
S
26
85°
65°
27
85°
65°
28
84°
64°
29
84°
62°
30
82°
61°
31
75°
57°
1
74°
55°
2
74°
55°
3
75°
56°
4
76°
61°
5
77°
61°
6
80°
62°
7
78°
61°
8
76°
59°
9
76°
57°
10
76°
53°
11
76°
52°
12
78°
62°
13
76°
63°
14
84°
61°
15
83°
57°
16
79°
62°
17
83°
57°
18
79°
56°
19
79°
52°
20
72°
50°
21
73°
49°
22
73°
50°
23
78°
51°
24
79°
53°
25
79°
53°
26
80°
55°
27
81°
59°
28
81°
54°
29
80°
56°
30
80°
57°
31
79°
51°
1
78°
46°
2
70°
47°
3
69°
53°
4
73°
56°
5
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Repentigny
Repentigny's August 2026 forecast shows daily high temperatures ranging from 69° to 85°, with overnight lows between 46° and 65°. The average high for August is 78° with an average low of 56°. 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 Repentigny. See also: September | October | November.