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