S
M
T
W
T
F
S
30
68°
56°
31
70°
57°
1
73°
54°
2
74°
49°
3
70°
48°
4
73°
51°
5
75°
55°
6
74°
56°
7
74°
55°
8
67°
53°
9
73°
54°
10
76°
54°
11
76°
55°
12
74°
53°
13
72°
55°
14
74°
54°
15
74°
45°
16
70°
42°
17
63°
48°
18
64°
53°
19
71°
52°
20
70°
52°
21
71°
42°
22
70°
41°
23
67°
42°
24
68°
43°
25
Hist. Avg.
65°
44°
26
Hist. Avg.
65°
44°
27
Hist. Avg.
64°
44°
28
Hist. Avg.
64°
44°
29
Hist. Avg.
64°
43°
30
Hist. Avg.
63°
43°
1
Hist. Avg.
63°
43°
2
Hist. Avg.
62°
42°
3
Hist. Avg.
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Côte-Saint-Luc
Côte-Saint-Luc's September 2026 forecast shows daily high temperatures ranging from 63° to 76°, with overnight lows between 41° and 57°. The average high for September is 71° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Côte-Saint-Luc. See also: October | November | December.
