S
M
T
W
T
F
S
29
30°
11°
30
27°
10°
1
28°
11°
2
28°
16°
3
34°
22°
4
27°
19°
5
26°
14°
6
27°
8°
7
26°
8°
8
28°
9°
9
35°
9°
10
36°
10°
11
36°
8°
12
37°
15°
13
36°
14°
14
29°
20°
15
25°
19°
16
29°
6°
17
25°
16°
18
24°
19°
19
26°
20°
20
28°
18°
21
29°
6°
22
27°
8°
23
25°
6°
24
28°
12°
25
25°
21°
26
30°
16°
27
33°
3°
28
30°
15°
29
20°
4°
30
26°
4°
31
20°
7°
1
27°
18°
2
31°
6°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Alpine
Alpine's December 2026 forecast shows daily high temperatures ranging from 20° to 37°, with overnight lows between 3° and 22°. The average high for December is 29° with an average low of 12°. 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 Alpine. See also: January | February | March.
