S
M
T
W
T
F
S
29
46°
40°
30
51°
35°
1
52°
29°
2
44°
37°
3
46°
37°
4
53°
33°
5
46°
36°
6
49°
42°
7
51°
39°
8
54°
35°
9
51°
35°
10
45°
38°
11
49°
37°
12
50°
37°
13
50°
32°
14
43°
35°
15
44°
37°
16
51°
34°
17
51°
30°
18
44°
31°
19
46°
30°
20
42°
34°
21
43°
36°
22
50°
35°
23
50°
36°
24
48°
35°
25
47°
31°
26
45°
28°
27
41°
27°
28
39°
29°
29
42°
28°
30
40°
27°
31
39°
33°
1
47°
20°
2
50°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Harrison
Harrison's December 2026 forecast shows daily high temperatures ranging from 39° to 54°, with overnight lows between 16° and 42°. The average high for December is 47° with an average low of 33°. 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 Harrison. See also: January | February | March.
