S
M
T
W
T
F
S
29
61°
40°
30
62°
42°
1
65°
47°
2
67°
50°
3
67°
51°
4
66°
51°
5
68°
50°
6
67°
49°
7
67°
41°
8
56°
36°
9
56°
36°
10
57°
37°
11
55°
35°
12
54°
35°
13
55°
39°
14
58°
48°
15
64°
44°
16
59°
39°
17
53°
39°
18
60°
40°
19
65°
42°
20
63°
47°
21
55°
34°
22
54°
48°
23
62°
41°
24
70°
33°
25
60°
29°
26
52°
33°
27
52°
40°
28
61°
48°
29
66°
41°
30
68°
32°
31
62°
40°
1
56°
35°
2
55°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Jack
Jack's December 2026 forecast shows daily high temperatures ranging from 52° to 70°, with overnight lows between 28° and 51°. The average high for December is 61° with an average low of 41°. 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 Jack. See also: January | February | March.
