S
M
T
W
T
F
S
30
83°
64°
31
83°
64°
1
82°
59°
2
75°
57°
3
74°
56°
4
75°
56°
5
75°
56°
6
79°
60°
7
82°
63°
8
81°
62°
9
78°
61°
10
81°
62°
11
81°
62°
12
82°
61°
13
81°
63°
14
80°
53°
15
73°
52°
16
70°
53°
17
73°
52°
18
71°
50°
19
72°
51°
20
71°
51°
21
77°
53°
22
76°
57°
23
77°
49°
24
77°
48°
25
71°
47°
26
69°
49°
27
73°
54°
28
73°
54°
29
74°
46°
30
70°
47°
1
66°
51°
2
67°
52°
3
71°
51°
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 66° to 83°, with overnight lows between 46° and 64°. The average high for September is 76° 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.