S
M
T
W
T
F
S
29
55°
45°
30
58°
36°
1
66°
34°
2
56°
32°
3
55°
30°
4
52°
33°
5
54°
39°
6
58°
42°
7
57°
43°
8
60°
39°
9
52°
36°
10
58°
43°
11
Hist. Avg.
58°
37°
12
Hist. Avg.
58°
37°
13
Hist. Avg.
58°
37°
14
Hist. Avg.
58°
37°
15
Hist. Avg.
58°
37°
16
Hist. Avg.
58°
36°
17
Hist. Avg.
58°
36°
18
Hist. Avg.
57°
36°
19
Hist. Avg.
57°
36°
20
Hist. Avg.
57°
36°
21
Hist. Avg.
57°
36°
22
Hist. Avg.
57°
36°
23
Hist. Avg.
57°
35°
24
Hist. Avg.
57°
35°
25
Hist. Avg.
57°
35°
26
Hist. Avg.
57°
35°
27
Hist. Avg.
56°
35°
28
Hist. Avg.
56°
35°
29
Hist. Avg.
56°
35°
30
Hist. Avg.
56°
35°
31
Hist. Avg.
56°
35°
1
Hist. Avg.
56°
34°
2
Hist. Avg.
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Allen
Allen's December 2026 forecast shows daily high temperatures ranging from 52° to 66°, with overnight lows between 30° and 45°. The average high for December is 57° with an average low of 38°. 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 Allen. See also: January | February | March.
