S
M
T
W
T
F
S
29
48°
21°
30
43°
21°
1
50°
24°
2
47°
27°
3
49°
26°
4
53°
26°
5
54°
24°
6
52°
20°
7
50°
22°
8
51°
23°
9
51°
24°
10
52°
21°
11
51°
17°
12
45°
22°
13
43°
22°
14
44°
13°
15
45°
9°
16
38°
8°
17
38°
8°
18
39°
9°
19
38°
7°
20
36°
9°
21
37°
10°
22
41°
11°
23
38°
16°
24
42°
16°
25
47°
17°
26
44°
22°
27
46°
18°
28
44°
11°
29
40°
11°
30
39°
10°
31
37°
7°
1
35°
7°
2
36°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Colby
Colby's December 2026 forecast shows daily high temperatures ranging from 35° to 54°, with overnight lows between 5° and 27°. The average high for December is 44° with an average low of 16°. 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 Colby. See also: January | February | March.
