S
M
T
W
T
F
S
30
64°
47°
31
68°
52°
1
72°
50°
2
71°
50°
3
71°
51°
4
72°
51°
5
72°
48°
6
63°
42°
7
62°
48°
8
67°
45°
9
61°
47°
10
64°
40°
11
61°
42°
12
60°
40°
13
60°
39°
14
58°
38°
15
56°
38°
16
58°
36°
17
55°
37°
18
Hist. Avg.
61°
41°
19
Hist. Avg.
61°
41°
20
Hist. Avg.
60°
40°
21
Hist. Avg.
60°
40°
22
Hist. Avg.
60°
40°
23
Hist. Avg.
60°
40°
24
Hist. Avg.
59°
39°
25
Hist. Avg.
59°
39°
26
Hist. Avg.
59°
39°
27
Hist. Avg.
59°
39°
28
Hist. Avg.
58°
38°
29
Hist. Avg.
58°
38°
30
Hist. Avg.
58°
38°
1
Hist. Avg.
57°
38°
2
Hist. Avg.
57°
37°
3
Hist. Avg.
57°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lac Ste. Anne
Lac Ste. Anne's September 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 36° and 52°. The average high for September is 64° with an average low of 44°. 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 Lac Ste. Anne. See also: October | November | December.
