S
M
T
W
T
F
S
30
80°
59°
31
80°
68°
1
84°
66°
2
69°
64°
3
87°
67°
4
85°
71°
5
79°
66°
6
77°
60°
7
79°
55°
8
80°
56°
9
84°
60°
10
86°
69°
11
80°
60°
12
80°
55°
13
81°
65°
14
75°
55°
15
74°
50°
16
81°
55°
17
81°
66°
18
81°
53°
19
70°
59°
20
67°
55°
21
68°
55°
22
64°
55°
23
66°
52°
24
70°
55°
25
73°
53°
26
72°
54°
27
75°
56°
28
71°
55°
29
72°
53°
30
73°
48°
1
67°
49°
2
73°
53°
3
66°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Butler
Butler's September 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 48° and 66°. The average high for September is 71° with an average low of 54°. 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 Butler. See also: October | November | December.