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