S
M
T
W
T
F
S
29
44°
25°
30
42°
25°
1
42°
26°
2
43°
36°
3
55°
30°
4
57°
25°
5
42°
27°
6
41°
26°
7
46°
28°
8
51°
32°
9
42°
23°
10
49°
35°
11
51°
37°
12
Hist. Avg.
45°
28°
13
Hist. Avg.
45°
28°
14
Hist. Avg.
45°
28°
15
Hist. Avg.
44°
27°
16
Hist. Avg.
44°
27°
17
Hist. Avg.
44°
27°
18
Hist. Avg.
44°
27°
19
Hist. Avg.
43°
26°
20
Hist. Avg.
43°
26°
21
Hist. Avg.
43°
26°
22
Hist. Avg.
43°
26°
23
Hist. Avg.
42°
26°
24
Hist. Avg.
42°
26°
25
Hist. Avg.
42°
25°
26
Hist. Avg.
42°
25°
27
Hist. Avg.
42°
25°
28
Hist. Avg.
42°
25°
29
Hist. Avg.
41°
24°
30
Hist. Avg.
41°
24°
31
Hist. Avg.
41°
24°
1
Hist. Avg.
41°
24°
2
Hist. Avg.
41°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Hallam
Hallam's December 2026 forecast shows daily high temperatures ranging from 41° to 57°, with overnight lows between 23° and 37°. The average high for December is 47° with an average low of 29°. 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 Hallam. See also: January | February | March.