S
M
T
W
T
F
S
30
89°
58°
31
87°
58°
1
88°
56°
2
80°
56°
3
79°
55°
4
80°
52°
5
82°
51°
6
83°
51°
7
85°
52°
8
86°
55°
9
87°
56°
10
87°
55°
11
84°
57°
12
83°
55°
13
84°
56°
14
83°
53°
15
82°
54°
16
82°
50°
17
80°
51°
18
79°
50°
19
71°
41°
20
75°
51°
21
79°
51°
22
Hist. Avg.
74°
40°
23
Hist. Avg.
74°
40°
24
Hist. Avg.
73°
40°
25
Hist. Avg.
73°
39°
26
Hist. Avg.
72°
39°
27
Hist. Avg.
72°
39°
28
Hist. Avg.
71°
38°
29
Hist. Avg.
70°
38°
30
Hist. Avg.
70°
38°
1
Hist. Avg.
69°
38°
2
Hist. Avg.
69°
37°
3
Hist. Avg.
68°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Chubbuck
Chubbuck's September 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 41° and 58°. The average high for September is 82° with an average low of 53°. 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 Chubbuck. See also: October | November | December.