S
M
T
W
T
F
S
30
66°
52°
31
64°
53°
1
69°
52°
2
70°
46°
3
71°
43°
4
66°
47°
5
70°
40°
6
62°
40°
7
61°
49°
8
65°
49°
9
63°
44°
10
65°
41°
11
60°
48°
12
65°
40°
13
62°
42°
14
65°
47°
15
68°
46°
16
67°
37°
17
Hist. Avg.
65°
43°
18
Hist. Avg.
65°
43°
19
Hist. Avg.
64°
43°
20
Hist. Avg.
64°
42°
21
Hist. Avg.
63°
42°
22
Hist. Avg.
63°
42°
23
Hist. Avg.
63°
41°
24
Hist. Avg.
62°
41°
25
Hist. Avg.
62°
41°
26
Hist. Avg.
61°
41°
27
Hist. Avg.
61°
40°
28
Hist. Avg.
61°
40°
29
Hist. Avg.
60°
40°
30
Hist. Avg.
60°
39°
1
Hist. Avg.
59°
39°
2
Hist. Avg.
59°
39°
3
Hist. Avg.
58°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rapide-Blanc
Rapide-Blanc's September 2026 forecast shows daily high temperatures ranging from 60° to 71°, with overnight lows between 37° and 53°. The average high for September is 66° with an average low of 45°. 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 Rapide-Blanc. See also: October | November | December.