S
M
T
W
T
F
S
30
77°
51°
31
74°
47°
1
73°
49°
2
71°
53°
3
74°
59°
4
71°
57°
5
67°
49°
6
72°
48°
7
74°
52°
8
68°
50°
9
66°
57°
10
67°
49°
11
65°
48°
12
68°
51°
13
70°
52°
14
67°
51°
15
66°
49°
16
65°
48°
17
68°
44°
18
66°
48°
19
68°
48°
20
67°
47°
21
68°
49°
22
67°
48°
23
66°
45°
24
60°
44°
25
64°
47°
26
65°
47°
27
63°
46°
28
55°
41°
29
52°
40°
30
54°
39°
1
52°
36°
2
53°
35°
3
56°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sainte-Thècle
Sainte-Thècle's September 2026 forecast shows daily high temperatures ranging from 52° to 74°, with overnight lows between 35° and 57°. The average high for September is 64° with an average low of 47°. 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 Sainte-Thècle. See also: October | November | December.