S
M
T
W
T
F
S
30
70°
54°
31
72°
48°
1
71°
56°
2
72°
57°
3
72°
61°
4
69°
55°
5
66°
56°
6
70°
51°
7
75°
57°
8
72°
54°
9
67°
60°
10
70°
46°
11
67°
45°
12
70°
55°
13
71°
54°
14
65°
48°
15
66°
49°
16
66°
45°
17
65°
47°
18
65°
46°
19
63°
44°
20
61°
43°
21
58°
48°
22
59°
47°
23
65°
48°
24
67°
47°
25
67°
47°
26
66°
45°
27
61°
42°
28
65°
46°
29
67°
47°
30
68°
48°
1
68°
48°
2
67°
45°
3
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint-André-Avellin
Saint-André-Avellin's September 2026 forecast shows daily high temperatures ranging from 58° to 75°, with overnight lows between 42° and 60°. The average high for September is 66° with an average low of 48°. 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-André-Avellin. See also: October | November | December.