S
M
T
W
T
F
S
30
63°
39°
31
66°
37°
1
71°
42°
2
68°
53°
3
67°
55°
4
67°
55°
5
69°
46°
6
74°
46°
7
68°
46°
8
65°
50°
9
65°
47°
10
52°
41°
11
61°
43°
12
71°
52°
13
61°
39°
14
55°
43°
15
60°
40°
16
56°
38°
17
52°
38°
18
52°
37°
19
48°
34°
20
49°
35°
21
51°
29°
22
61°
43°
23
61°
43°
24
58°
42°
25
60°
42°
26
56°
39°
27
58°
41°
28
60°
43°
29
61°
44°
30
61°
45°
1
62°
44°
2
61°
41°
3
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chapais
Chapais's September 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 29° and 52°. The average high for September is 58° with an average low of 41°. 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 Chapais. See also: October | November | December.
