S
M
T
W
T
F
S
29
47°
35°
30
47°
29°
1
42°
27°
2
47°
35°
3
52°
36°
4
50°
37°
5
52°
35°
6
42°
31°
7
40°
30°
8
38°
23°
9
35°
21°
10
35°
20°
11
36°
20°
12
35°
21°
13
37°
23°
14
43°
28°
15
44°
33°
16
47°
33°
17
44°
32°
18
40°
32°
19
42°
28°
20
39°
24°
21
36°
23°
22
32°
24°
23
34°
19°
24
35°
17°
25
32°
13°
26
29°
14°
27
27°
23°
28
39°
19°
29
38°
15°
30
40°
12°
31
40°
13°
1
25°
13°
2
28°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dennison
Dennison's December 2026 forecast shows daily high temperatures ranging from 25° to 52°, with overnight lows between 11° and 37°. The average high for December is 39° with an average low of 24°. 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 Dennison. See also: January | February | March.
