S
M
T
W
T
F
S
30
76°
54°
31
84°
37°
1
85°
59°
2
75°
57°
3
78°
52°
4
79°
46°
5
84°
48°
6
85°
50°
7
72°
42°
8
77°
44°
9
82°
49°
10
87°
58°
11
85°
56°
12
82°
52°
13
71°
48°
14
76°
49°
15
78°
52°
16
78°
54°
17
81°
53°
18
79°
54°
19
77°
48°
20
69°
46°
21
79°
54°
22
69°
53°
23
68°
48°
24
71°
51°
25
72°
50°
26
72°
51°
27
73°
50°
28
67°
40°
29
63°
38°
30
62°
38°
1
63°
42°
2
63°
40°
3
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pocatello
Pocatello's September 2026 forecast shows daily high temperatures ranging from 62° to 87°, with overnight lows between 38° and 58°. The average high for September is 74° with an average low of 48°. 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.
