S
M
T
W
T
F
S
29
63°
43°
30
70°
41°
1
69°
42°
2
68°
50°
3
65°
45°
4
72°
42°
5
66°
48°
6
67°
51°
7
68°
48°
8
70°
49°
9
65°
41°
10
69°
35°
11
61°
36°
12
60°
39°
13
62°
34°
14
57°
34°
15
55°
36°
16
54°
36°
17
56°
37°
18
59°
36°
19
56°
44°
20
61°
47°
21
64°
48°
22
70°
43°
23
67°
33°
24
61°
38°
25
58°
36°
26
66°
45°
27
70°
46°
28
Hist. Avg.
62°
38°
29
Hist. Avg.
62°
39°
30
Hist. Avg.
62°
39°
31
Hist. Avg.
62°
39°
1
Hist. Avg.
62°
39°
2
Hist. Avg.
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Bexar
Bexar's December 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 33° and 51°. The average high for December is 64° with an average low of 41°. 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 Bexar. See also: January | February | March.