S
M
T
W
T
F
S
29
60°
43°
30
62°
44°
1
64°
41°
2
52°
34°
3
50°
30°
4
54°
35°
5
57°
41°
6
51°
34°
7
48°
31°
8
47°
27°
9
47°
29°
10
46°
28°
11
47°
29°
12
49°
32°
13
52°
29°
14
50°
28°
15
50°
37°
16
49°
37°
17
52°
32°
18
56°
30°
19
49°
25°
20
47°
24°
21
45°
25°
22
47°
29°
23
50°
28°
24
45°
25°
25
46°
25°
26
45°
26°
27
46°
24°
28
46°
25°
29
47°
29°
30
50°
27°
31
46°
25°
1
45°
21°
2
44°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Banner
Banner's December 2026 forecast shows daily high temperatures ranging from 44° to 64°, with overnight lows between 21° and 44°. The average high for December is 50° with an average low of 30°. 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 Banner. See also: January | February | March.
