S
M
T
W
T
F
S
29
41°
25°
30
43°
30°
1
46°
37°
2
48°
37°
3
43°
38°
4
53°
38°
5
45°
37°
6
49°
38°
7
47°
36°
8
43°
34°
9
40°
31°
10
41°
29°
11
52°
32°
12
56°
26°
13
56°
21°
14
39°
24°
15
38°
23°
16
39°
21°
17
38°
28°
18
43°
34°
19
48°
35°
20
51°
34°
21
51°
32°
22
50°
35°
23
52°
36°
24
54°
26°
25
54°
19°
26
48°
20°
27
36°
26°
28
42°
32°
29
47°
33°
30
49°
35°
31
51°
36°
1
53°
27°
2
53°
22°
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 36° to 56°, with overnight lows between 19° and 38°. The average high for December is 47° 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 Jasper. See also: January | February | March.
