S
M
T
W
T
F
S
29
10°
4°
30
20°
10°
1
22°
9°
2
17°
2°
3
13°
1°
4
7°
-9°
5
6°
-7°
6
4°
3°
7
10°
0°
8
17°
-4°
9
15°
-14°
10
6°
-11°
11
5°
-9°
12
4°
-1°
13
8°
-2°
14
19°
-14°
15
17°
-6°
16
9°
-10°
17
9°
-12°
18
3°
-12°
19
0°
-14°
20
2°
2°
21
13°
4°
22
19°
-12°
23
19°
-14°
24
16°
-14°
25
-2°
-15°
26
-1°
-13°
27
0°
-14°
28
-2°
-13°
29
0°
-6°
30
13°
-9°
31
11°
-10°
1
1°
0°
2
12°
-8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Iditarod
Iditarod's December 2026 forecast shows daily high temperatures ranging from -2° to 22°, with overnight lows between -15° and 10°. The average high for December is 9° with an average low of -6°. 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 Iditarod. See also: January | February | March.