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
N/A
2
80°
67°
3
77°
58°
4
82°
58°
5
82°
67°
6
83°
64°
7
83°
64°
8
83°
66°
9
82°
62°
10
80°
60°
11
78°
58°
12
73°
59°
13
75°
57°
14
76°
56°
15
73°
56°
16
72°
54°
17
78°
58°
18
72°
55°
19
72°
55°
20
76°
56°
21
71°
55°
22
73°
59°
23
76°
58°
24
75°
58°
25
75°
57°
26
78°
58°
27
78°
57°
28
70°
58°
29
77°
58°
30
76°
57°
31
77°
56°
1
69°
54°
2
67°
54°
3
68°
52°
4
69°
51°
5
72°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Mont-Saint-Hilaire
Mont-Saint-Hilaire's August 2026 forecast shows daily high temperatures ranging from 67° to 83°, with overnight lows between 51° and 67°. The average high for August is 76° with an average low of 58°. 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 Mont-Saint-Hilaire. See also: September | October | November.
