S
M
T
W
T
F
S
30
94°
68°
31
93°
67°
1
92°
68°
2
92°
69°
3
93°
68°
4
92°
63°
5
89°
60°
6
85°
59°
7
83°
63°
8
83°
66°
9
86°
67°
10
90°
66°
11
91°
64°
12
83°
66°
13
88°
63°
14
89°
61°
15
82°
58°
16
81°
63°
17
85°
64°
18
89°
65°
19
89°
65°
20
88°
63°
21
88°
63°
22
80°
59°
23
78°
57°
24
80°
57°
25
80°
55°
26
79°
55°
27
78°
54°
28
76°
54°
29
77°
53°
30
76°
55°
1
76°
62°
2
78°
62°
3
83°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Butte Valley
Butte Valley's September 2026 forecast shows daily high temperatures ranging from 76° to 94°, with overnight lows between 53° and 69°. The average high for September is 85° with an average low of 62°. 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 Butte Valley. See also: October | November | December.
