S
M
T
W
T
F
S
30
62°
44°
31
66°
44°
1
67°
42°
2
69°
44°
3
60°
40°
4
66°
43°
5
69°
45°
6
70°
35°
7
69°
32°
8
57°
34°
9
58°
33°
10
59°
34°
11
59°
34°
12
62°
36°
13
64°
41°
14
61°
38°
15
63°
33°
16
54°
38°
17
54°
40°
18
57°
41°
19
57°
39°
20
58°
33°
21
56°
34°
22
53°
35°
23
55°
34°
24
59°
38°
25
61°
40°
26
Hist. Avg.
57°
33°
27
Hist. Avg.
57°
32°
28
Hist. Avg.
57°
32°
29
Hist. Avg.
57°
32°
30
Hist. Avg.
56°
32°
1
Hist. Avg.
56°
31°
2
Hist. Avg.
56°
31°
3
Hist. Avg.
56°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lac Ste. Anne County
Lac Ste. Anne County's September 2026 forecast shows daily high temperatures ranging from 53° to 70°, with overnight lows between 32° and 45°. The average high for September is 61° with an average low of 38°. 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 County. See also: October | November | December.
