S
M
T
W
T
F
S
29
38°
22°
30
39°
14°
1
32°
17°
2
29°
20°
3
32°
22°
4
33°
18°
5
36°
17°
6
31°
17°
7
27°
16°
8
29°
21°
9
30°
19°
10
34°
13°
11
32°
12°
12
28°
18°
13
27°
14°
14
28°
13°
15
25°
11°
16
26°
3°
17
25°
1°
18
22°
0°
19
17°
-1°
20
15°
6°
21
16°
8°
22
18°
0°
23
21°
5°
24
17°
-3°
25
16°
-1°
26
14°
4°
27
17°
7°
28
18°
2°
29
22°
12°
30
21°
12°
31
24°
4°
1
22°
3°
2
Hist. Avg.
24°
8°
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 14° to 39°, with overnight lows between -3° and 22°. The average high for December is 25° with an average low of 10°. 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.
