S
M
T
W
T
F
S
29
43°
37°
30
45°
36°
1
43°
37°
2
44°
36°
3
42°
36°
4
44°
35°
5
43°
34°
6
41°
33°
7
34°
32°
8
33°
32°
9
35°
31°
10
39°
33°
11
41°
34°
12
42°
33°
13
39°
33°
14
34°
24°
15
32°
27°
16
36°
29°
17
37°
28°
18
36°
29°
19
37°
25°
20
36°
22°
21
32°
23°
22
32°
27°
23
33°
27°
24
35°
26°
25
33°
24°
26
32°
22°
27
32°
22°
28
29°
21°
29
32°
21°
30
30°
22°
31
32°
20°
1
33°
19°
2
25°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Ironton
Ironton's December 2026 forecast shows daily high temperatures ranging from 25° to 45°, with overnight lows between 17° and 37°. The average high for December is 36° with an average low of 28°. 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 Ironton. See also: January | February | March.