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