S
M
T
W
T
F
S
29
49°
36°
30
56°
41°
1
53°
42°
2
54°
32°
3
59°
29°
4
45°
28°
5
43°
31°
6
49°
33°
7
55°
37°
8
57°
41°
9
42°
28°
10
46°
33°
11
Hist. Avg.
52°
33°
12
Hist. Avg.
52°
33°
13
Hist. Avg.
52°
32°
14
Hist. Avg.
52°
32°
15
Hist. Avg.
51°
32°
16
Hist. Avg.
51°
32°
17
Hist. Avg.
51°
32°
18
Hist. Avg.
51°
32°
19
Hist. Avg.
50°
32°
20
Hist. Avg.
50°
32°
21
Hist. Avg.
50°
32°
22
Hist. Avg.
50°
31°
23
Hist. Avg.
50°
31°
24
Hist. Avg.
50°
31°
25
Hist. Avg.
50°
31°
26
Hist. Avg.
50°
31°
27
Hist. Avg.
49°
31°
28
Hist. Avg.
49°
31°
29
Hist. Avg.
49°
31°
30
Hist. Avg.
49°
30°
31
Hist. Avg.
49°
30°
1
Hist. Avg.
49°
30°
2
Hist. Avg.
49°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Alamo
Alamo's December 2026 forecast shows daily high temperatures ranging from 42° to 59°, with overnight lows between 28° and 42°. The average high for December is 51° with an average low of 34°. 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 Alamo. See also: January | February | March.
