S
M
T
W
T
F
S
29
33°
22°
30
37°
20°
1
35°
15°
2
31°
17°
3
31°
15°
4
36°
12°
5
28°
17°
6
31°
26°
7
36°
28°
8
42°
27°
9
45°
24°
10
43°
23°
11
37°
22°
12
35°
19°
13
35°
20°
14
31°
22°
15
31°
21°
16
32°
21°
17
33°
15°
18
32°
14°
19
28°
12°
20
32°
21°
21
33°
20°
22
37°
7°
23
36°
10°
24
27°
22°
25
37°
16°
26
37°
4°
27
35°
10°
28
23°
2°
29
30°
3°
30
23°
9°
31
37°
8°
1
36°
3°
2
23°
2°
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 23° to 45°, with overnight lows between 2° and 28°. The average high for December is 33° with an average low of 16°. 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.
