S
M
T
W
T
F
S
29
38°
22°
30
39°
27°
1
38°
27°
2
39°
26°
3
40°
25°
4
37°
24°
5
36°
25°
6
35°
15°
7
32°
19°
8
40°
22°
9
42°
25°
10
39°
21°
11
24°
12°
12
28°
20°
13
33°
23°
14
34°
20°
15
37°
21°
16
38°
19°
17
37°
20°
18
36°
13°
19
32°
14°
20
29°
17°
21
29°
16°
22
37°
9°
23
28°
8°
24
24°
20°
25
31°
21°
26
36°
21°
27
36°
18°
28
35°
14°
29
33°
8°
30
31°
8°
31
29°
7°
1
26°
6°
2
24°
9°
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 24° to 42°, with overnight lows between 6° and 27°. The average high for December is 34° with an average low of 18°. 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.
