S
M
T
W
T
F
S
30
65°
50°
31
68°
44°
1
65°
47°
2
70°
44°
3
61°
55°
4
64°
51°
5
61°
47°
6
65°
44°
7
72°
49°
8
61°
42°
9
65°
40°
10
69°
51°
11
58°
45°
12
69°
46°
13
74°
60°
14
64°
42°
15
58°
39°
16
70°
51°
17
59°
44°
18
58°
45°
19
56°
43°
20
54°
41°
21
56°
42°
22
58°
39°
23
61°
36°
24
68°
46°
25
70°
45°
26
67°
47°
27
59°
41°
28
56°
43°
29
56°
47°
30
64°
53°
1
65°
49°
2
60°
43°
3
57°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Rivière-du-Loup
Rivière-du-Loup's September 2026 forecast shows daily high temperatures ranging from 56° to 67°, with overnight lows between 41° and 53°. The average high for September is 61° with an average low of 46°. 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 Rivière-du-Loup. See also: October | November | December.
