S
M
T
W
T
F
S
30
84°
68°
31
86°
70°
1
88°
71°
2
88°
69°
3
75°
69°
4
82°
68°
5
75°
63°
6
73°
57°
7
75°
57°
8
77°
68°
9
80°
57°
10
76°
52°
11
76°
59°
12
79°
57°
13
71°
60°
14
77°
64°
15
68°
53°
16
67°
54°
17
69°
52°
18
66°
48°
19
69°
49°
20
66°
48°
21
67°
54°
22
68°
56°
23
71°
56°
24
75°
55°
25
75°
56°
26
74°
56°
27
74°
57°
28
76°
57°
29
75°
56°
30
74°
56°
1
72°
50°
2
67°
46°
3
61°
43°
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 61° to 80°, with overnight lows between 43° and 68°. The average high for September is 72° with an average low of 55°. 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.