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