S
M
T
W
T
F
S
29
64°
44°
30
69°
42°
1
68°
43°
2
66°
50°
3
67°
42°
4
71°
41°
5
67°
46°
6
66°
49°
7
67°
44°
8
71°
48°
9
66°
42°
10
68°
34°
11
58°
37°
12
60°
37°
13
64°
31°
14
57°
31°
15
50°
33°
16
50°
33°
17
50°
35°
18
57°
35°
19
54°
43°
20
58°
45°
21
64°
43°
22
63°
37°
23
57°
30°
24
56°
40°
25
56°
34°
26
63°
43°
27
48°
28°
28
65°
42°
29
64°
33°
30
Hist. Avg.
58°
36°
31
Hist. Avg.
58°
36°
1
Hist. Avg.
58°
36°
2
Hist. Avg.
58°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Waco
Waco's December 2026 forecast shows daily high temperatures ranging from 48° to 71°, with overnight lows between 28° and 50°. The average high for December is 61° with an average low of 39°. 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 Waco. See also: January | February | March.