S
M
T
W
T
F
S
29
57°
41°
30
60°
34°
1
57°
29°
2
44°
26°
3
48°
36°
4
56°
39°
5
51°
37°
6
45°
32°
7
44°
26°
8
42°
24°
9
43°
27°
10
45°
30°
11
48°
29°
12
53°
31°
13
49°
31°
14
47°
28°
15
48°
30°
16
46°
31°
17
45°
25°
18
43°
23°
19
42°
21°
20
39°
18°
21
38°
25°
22
43°
28°
23
44°
24°
24
42°
21°
25
40°
23°
26
41°
26°
27
42°
24°
28
42°
22°
29
41°
26°
30
41°
23°
31
42°
20°
1
39°
17°
2
38°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Granby
Granby's December 2026 forecast shows daily high temperatures ranging from 38° to 60°, with overnight lows between 17° and 41°. The average high for December is 45° with an average low of 27°. 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 Granby. See also: January | February | March.
