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