S
M
T
W
T
F
S
29
52°
40°
30
58°
39°
1
57°
38°
2
56°
34°
3
45°
32°
4
51°
31°
5
57°
38°
6
52°
35°
7
44°
28°
8
42°
24°
9
42°
24°
10
41°
27°
11
41°
30°
12
42°
27°
13
44°
25°
14
43°
23°
15
42°
29°
16
43°
31°
17
44°
32°
18
48°
29°
19
47°
23°
20
43°
22°
21
40°
22°
22
40°
24°
23
44°
27°
24
42°
24°
25
41°
22°
26
40°
20°
27
39°
22°
28
38°
21°
29
39°
22°
30
41°
25°
31
44°
21°
1
43°
19°
2
38°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Alpha
Alpha's December 2026 forecast shows daily high temperatures ranging from 38° to 58°, with overnight lows between 16° and 40°. The average high for December is 45° with an average low of 27°. 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 Alpha. See also: January | February | March.
