S
M
T
W
T
F
S
29
43°
23°
30
39°
18°
1
35°
22°
2
38°
25°
3
40°
22°
4
38°
21°
5
40°
24°
6
41°
20°
7
39°
16°
8
36°
20°
9
36°
18°
10
34°
11°
11
30°
16°
12
34°
8°
13
33°
3°
14
20°
12°
15
24°
14°
16
31°
2°
17
32°
0°
18
29°
8°
19
19°
4°
20
29°
2°
21
23°
4°
22
17°
8°
23
19°
11°
24
25°
13°
25
25°
9°
26
34°
15°
27
16°
9°
28
31°
-3°
29
Hist. Avg.
23°
3°
30
Hist. Avg.
23°
3°
31
Hist. Avg.
23°
3°
1
Hist. Avg.
23°
3°
2
Hist. Avg.
23°
3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Bellingham
Bellingham's December 2026 forecast shows daily high temperatures ranging from 16° to 43°, with overnight lows between -3° and 25°. The average high for December is 31° with an average low of 13°. 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 Bellingham. See also: January | February | March.
