S
M
T
W
T
F
S
29
38°
26°
30
41°
27°
1
41°
27°
2
40°
26°
3
39°
24°
4
37°
27°
5
40°
28°
6
39°
26°
7
40°
20°
8
39°
20°
9
32°
22°
10
34°
23°
11
35°
23°
12
35°
22°
13
34°
23°
14
34°
23°
15
36°
16°
16
36°
14°
17
25°
17°
18
29°
13°
19
26°
18°
20
28°
20°
21
32°
22°
22
34°
21°
23
34°
16°
24
31°
9°
25
25°
12°
26
24°
21°
27
30°
18°
28
33°
14°
29
28°
11°
30
26°
16°
31
25°
3°
1
29°
1°
2
16°
4°
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 16° to 41°, with overnight lows between 1° and 28°. The average high for December is 33° with an average low of 19°. 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.
