S
M
T
W
T
F
S
29
45°
25°
30
51°
38°
1
48°
38°
2
46°
37°
3
47°
38°
4
47°
37°
5
50°
36°
6
53°
37°
7
54°
34°
8
50°
27°
9
43°
24°
10
44°
32°
11
57°
24°
12
59°
21°
13
51°
20°
14
40°
25°
15
46°
20°
16
42°
27°
17
48°
33°
18
49°
34°
19
55°
34°
20
55°
33°
21
54°
33°
22
53°
36°
23
58°
22°
24
57°
18°
25
53°
16°
26
36°
19°
27
42°
27°
28
45°
34°
29
53°
35°
30
55°
37°
31
56°
34°
1
58°
24°
2
58°
18°
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 59°, with overnight lows between 16° and 38°. The average high for December is 50° 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.
