S
M
T
W
T
F
S
30
63°
44°
31
74°
45°
1
81°
40°
2
78°
53°
3
64°
43°
4
64°
42°
5
54°
45°
6
57°
47°
7
52°
48°
8
65°
49°
9
69°
49°
10
71°
48°
11
55°
45°
12
54°
40°
13
53°
35°
14
51°
39°
15
48°
34°
16
61°
41°
17
68°
42°
18
66°
46°
19
65°
48°
20
70°
47°
21
75°
49°
22
71°
48°
23
68°
46°
24
68°
45°
25
62°
45°
26
66°
46°
27
60°
33°
28
53°
22°
29
54°
29°
30
54°
29°
1
55°
28°
2
56°
27°
3
52°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Twin Butte
Twin Butte's September 2026 forecast shows daily high temperatures ranging from 48° to 75°, with overnight lows between 22° and 49°. The average high for September is 61° with an average low of 38°. 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 Twin Butte. See also: October | November | December.