S
M
T
W
T
F
S
30
85°
58°
31
82°
56°
1
79°
54°
2
81°
57°
3
82°
55°
4
79°
54°
5
78°
53°
6
79°
55°
7
81°
47°
8
77°
53°
9
78°
48°
10
81°
49°
11
77°
49°
12
77°
50°
13
79°
53°
14
82°
51°
15
82°
54°
16
84°
56°
17
84°
46°
18
79°
45°
19
73°
50°
20
80°
54°
21
81°
50°
22
82°
42°
23
71°
43°
24
70°
42°
25
77°
49°
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 Pocatello
Pocatello's September 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 42° and 58°. The average high for September is 79° with an average low of 51°. 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 Pocatello. See also: October | November | December.
