S
M
T
W
T
F
S
30
74°
47°
31
70°
48°
1
72°
50°
2
70°
48°
3
64°
44°
4
63°
41°
5
63°
49°
6
64°
51°
7
69°
49°
8
68°
49°
9
62°
48°
10
61°
41°
11
66°
42°
12
70°
49°
13
70°
50°
14
68°
45°
15
67°
47°
16
64°
41°
17
59°
44°
18
64°
38°
19
56°
44°
20
60°
43°
21
56°
38°
22
55°
41°
23
57°
41°
24
54°
40°
25
53°
39°
26
53°
37°
27
55°
34°
28
54°
33°
29
52°
34°
30
54°
32°
1
53°
35°
2
53°
31°
3
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint-Ambroise
Saint-Ambroise's September 2026 forecast shows daily high temperatures ranging from 50° to 74°, with overnight lows between 31° and 51°. The average high for September is 61° with an average low of 42°. 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 Saint-Ambroise. See also: October | November | December.
