S
M
T
W
T
F
S
29
68°
50°
30
71°
51°
1
71°
51°
2
70°
50°
3
65°
45°
4
61°
40°
5
60°
41°
6
63°
44°
7
58°
35°
8
56°
34°
9
56°
36°
10
55°
39°
11
54°
37°
12
54°
40°
13
56°
44°
14
57°
43°
15
55°
42°
16
56°
43°
17
65°
41°
18
67°
43°
19
66°
44°
20
57°
45°
21
57°
42°
22
59°
41°
23
67°
30°
24
59°
29°
25
53°
30°
26
57°
44°
27
57°
47°
28
66°
44°
29
68°
37°
30
68°
37°
31
56°
38°
1
59°
27°
2
59°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Austin
Austin's December 2026 forecast shows daily high temperatures ranging from 53° to 71°, with overnight lows between 27° and 51°. The average high for December is 61° with an average low of 40°. 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 Austin. See also: January | February | March.
