S
M
T
W
T
F
S
30
92°
66°
31
84°
55°
1
77°
61°
2
89°
53°
3
99°
71°
4
92°
63°
5
96°
69°
6
86°
68°
7
81°
68°
8
84°
56°
9
78°
55°
10
88°
51°
11
94°
62°
12
71°
50°
13
68°
46°
14
75°
52°
15
72°
48°
16
69°
45°
17
74°
62°
18
71°
57°
19
62°
55°
20
61°
53°
21
60°
50°
22
69°
53°
23
72°
55°
24
71°
51°
25
68°
53°
26
75°
54°
27
74°
52°
28
69°
50°
29
71°
48°
30
63°
47°
1
76°
49°
2
63°
51°
3
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Chamberlain
Chamberlain's September 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 47° and 62°. The average high for September is 69° with an average low of 52°. 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 Chamberlain. See also: October | November | December.
