S
M
T
W
T
F
S
30
67°
48°
31
66°
49°
1
68°
48°
2
72°
49°
3
75°
51°
4
75°
50°
5
74°
51°
6
75°
43°
7
74°
50°
8
71°
52°
9
75°
43°
10
72°
40°
11
67°
39°
12
62°
39°
13
62°
40°
14
63°
38°
15
62°
40°
16
63°
42°
17
65°
46°
18
69°
38°
19
70°
36°
20
60°
36°
21
58°
35°
22
56°
38°
23
66°
45°
24
62°
45°
25
Hist. Avg.
61°
39°
26
Hist. Avg.
61°
39°
27
Hist. Avg.
60°
39°
28
Hist. Avg.
60°
38°
29
Hist. Avg.
59°
38°
30
Hist. Avg.
59°
38°
1
Hist. Avg.
59°
37°
2
Hist. Avg.
58°
37°
3
Hist. Avg.
58°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ste. Agathe
Ste. Agathe's September 2026 forecast shows daily high temperatures ranging from 56° to 75°, with overnight lows between 35° and 52°. The average high for September is 67° 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 Ste. Agathe. See also: October | November | December.
