S
M
T
W
T
F
S
27
42°
24°
28
42°
22°
29
41°
26°
30
41°
23°
31
42°
20°
1
39°
17°
2
38°
22°
3
39°
31°
4
42°
34°
5
45°
33°
6
53°
23°
7
46°
18°
8
39°
20°
9
38°
24°
10
41°
19°
11
42°
16°
12
38°
15°
13
35°
18°
14
40°
17°
15
38°
19°
16
40°
21°
17
43°
18°
18
38°
16°
19
37°
19°
20
38°
23°
21
43°
32°
22
43°
32°
23
44°
31°
24
47°
25°
25
42°
25°
26
44°
26°
27
46°
26°
28
45°
22°
29
43°
25°
30
43°
20°
31
Hist. Avg.
43°
22°
1
Hist. Avg.
43°
23°
2
Hist. Avg.
44°
23°
3
Hist. Avg.
44°
23°
4
Hist. Avg.
44°
23°
5
Hist. Avg.
44°
23°
6
Hist. Avg.
44°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Granby
Granby's January 2027 forecast shows daily high temperatures ranging from 35° to 53°, with overnight lows between 15° and 34°. The average high for January is 42° with an average low of 23°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Granby. See also: February | March | April.