S
M
T
W
T
F
S
29
44°
31°
30
52°
39°
1
47°
39°
2
45°
38°
3
46°
38°
4
46°
37°
5
49°
36°
6
53°
37°
7
51°
34°
8
48°
28°
9
42°
26°
10
42°
34°
11
55°
22°
12
55°
21°
13
44°
19°
14
38°
26°
15
43°
22°
16
41°
29°
17
47°
33°
18
50°
33°
19
53°
32°
20
53°
32°
21
52°
31°
22
51°
34°
23
55°
21°
24
54°
17°
25
45°
14°
26
33°
19°
27
38°
29°
28
40°
33°
29
52°
36°
30
54°
36°
31
55°
33°
1
56°
23°
2
56°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Jasper
Jasper's December 2026 forecast shows daily high temperatures ranging from 33° to 56°, with overnight lows between 14° and 39°. The average high for December is 48° 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 Jasper. See also: January | February | March.
