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
81°
56°
10
75°
53°
11
78°
61°
12
80°
54°
13
69°
48°
14
68°
64°
15
76°
57°
16
67°
57°
17
70°
56°
18
69°
53°
19
68°
50°
20
67°
51°
21
71°
51°
22
72°
54°
23
73°
52°
24
67°
43°
25
70°
55°
26
75°
56°
27
75°
56°
28
74°
55°
29
72°
55°
30
73°
53°
1
69°
49°
2
65°
53°
3
70°
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 65° to 80°, with overnight lows between 43° and 64°. 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.