S
M
T
W
T
F
S
30
89°
57°
31
90°
58°
1
89°
60°
2
90°
58°
3
91°
53°
4
85°
51°
5
84°
52°
6
80°
56°
7
87°
53°
8
76°
49°
9
77°
53°
10
77°
47°
11
75°
46°
12
74°
47°
13
75°
45°
14
73°
46°
15
73°
45°
16
75°
44°
17
74°
45°
18
74°
45°
19
76°
46°
20
73°
46°
21
74°
45°
22
74°
46°
23
78°
51°
24
71°
41°
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 Pocatello
Pocatello's September 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 41° and 60°. The average high for September is 79° with an average low of 49°. 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.
