S
M
T
W
T
F
S
29
33°
22°
30
38°
23°
1
36°
21°
2
35°
20°
3
35°
18°
4
32°
20°
5
35°
20°
6
34°
19°
7
36°
14°
8
34°
12°
9
26°
17°
10
29°
17°
11
31°
16°
12
28°
17°
13
30°
17°
14
32°
16°
15
32°
10°
16
31°
6°
17
24°
10°
18
25°
7°
19
21°
10°
20
24°
14°
21
29°
14°
22
31°
15°
23
32°
8°
24
29°
3°
25
22°
10°
26
21°
14°
27
27°
13°
28
29°
8°
29
27°
8°
30
22°
5°
31
24°
-6°
1
27°
-6°
2
11°
-2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Eagle River
Eagle River's December 2026 forecast shows daily high temperatures ranging from 11° to 38°, with overnight lows between -6° and 23°. The average high for December is 29° with an average low of 12°. 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 Eagle River. See also: January | February | March.