S
M
T
W
T
F
S
30
102°
77°
31
100°
75°
1
99°
73°
2
100°
75°
3
100°
73°
4
100°
72°
5
99°
75°
6
100°
72°
7
100°
75°
8
102°
77°
9
102°
72°
10
86°
70°
11
94°
75°
12
102°
74°
13
99°
76°
14
98°
71°
15
85°
61°
16
84°
64°
17
83°
61°
18
83°
59°
19
80°
57°
20
82°
58°
21
84°
57°
22
89°
64°
23
86°
64°
24
79°
63°
25
78°
63°
26
81°
62°
27
82°
62°
28
81°
61°
29
79°
61°
30
85°
51°
1
72°
48°
2
73°
48°
3
71°
47°
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 71° to 102°, with overnight lows between 47° and 77°. The average high for September is 85° with an average low of 63°. 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.