S
M
T
W
T
F
S
29
36°
18°
30
34°
18°
1
33°
19°
2
35°
27°
3
40°
23°
4
48°
20°
5
36°
24°
6
34°
25°
7
38°
24°
8
42°
27°
9
37°
19°
10
43°
28°
11
43°
31°
12
Hist. Avg.
36°
21°
13
Hist. Avg.
36°
21°
14
Hist. Avg.
36°
21°
15
Hist. Avg.
35°
20°
16
Hist. Avg.
35°
20°
17
Hist. Avg.
35°
20°
18
Hist. Avg.
35°
20°
19
Hist. Avg.
34°
19°
20
Hist. Avg.
34°
19°
21
Hist. Avg.
34°
19°
22
Hist. Avg.
34°
18°
23
Hist. Avg.
33°
18°
24
Hist. Avg.
33°
18°
25
Hist. Avg.
33°
18°
26
Hist. Avg.
33°
17°
27
Hist. Avg.
32°
17°
28
Hist. Avg.
32°
17°
29
Hist. Avg.
32°
16°
30
Hist. Avg.
32°
16°
31
Hist. Avg.
32°
16°
1
Hist. Avg.
32°
16°
2
Hist. Avg.
32°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Austin
Austin's December 2026 forecast shows daily high temperatures ranging from 33° to 48°, with overnight lows between 18° and 31°. The average high for December is 38° with an average low of 23°. 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.
