S
M
T
W
T
F
S
29
43°
24°
30
41°
27°
1
43°
28°
2
43°
29°
3
42°
30°
4
43°
25°
5
39°
21°
6
36°
26°
7
39°
27°
8
39°
23°
9
38°
24°
10
35°
21°
11
36°
20°
12
34°
14°
13
29°
12°
14
27°
11°
15
29°
13°
16
31°
13°
17
33°
16°
18
33°
21°
19
39°
25°
20
39°
24°
21
38°
14°
22
32°
14°
23
29°
11°
24
26°
11°
25
27°
14°
26
32°
15°
27
40°
15°
28
41°
17°
29
41°
19°
30
42°
20°
31
41°
22°
1
41°
19°
2
39°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Pocatello
Pocatello's December 2026 forecast shows daily high temperatures ranging from 26° to 43°, with overnight lows between 11° and 30°. The average high for December is 37° with an average low of 20°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Pocatello. See also: January | February | March.
