S
M
T
W
T
F
S
29
49°
35°
30
52°
42°
1
51°
42°
2
51°
41°
3
49°
42°
4
49°
41°
5
51°
37°
6
56°
41°
7
57°
39°
8
55°
35°
9
51°
32°
10
50°
40°
11
60°
24°
12
60°
23°
13
42°
23°
14
44°
27°
15
48°
25°
16
49°
31°
17
53°
36°
18
52°
38°
19
58°
36°
20
57°
34°
21
58°
37°
22
56°
38°
23
61°
22°
24
59°
19°
25
45°
20°
26
40°
24°
27
47°
36°
28
52°
38°
29
59°
40°
30
60°
40°
31
60°
36°
1
62°
27°
2
62°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Horntown
Horntown's December 2026 forecast shows daily high temperatures ranging from 40° to 62°, with overnight lows between 19° and 42°. The average high for December is 53° 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 Horntown. See also: January | February | March.