S
M
T
W
T
F
S
27
32°
16°
28
32°
12°
29
31°
16°
30
33°
27°
31
38°
21°
1
41°
16°
2
32°
13°
3
29°
12°
4
29°
19°
5
36°
29°
6
39°
31°
7
48°
18°
8
51°
13°
9
33°
14°
10
28°
15°
11
32°
12°
12
29°
11°
13
26°
12°
14
26°
12°
15
27°
13°
16
30°
15°
17
39°
24°
18
36°
16°
19
44°
13°
20
31°
13°
21
28°
18°
22
36°
25°
23
39°
28°
24
42°
32°
25
48°
31°
26
49°
29°
27
45°
28°
28
44°
25°
29
41°
21°
30
32°
17°
31
34°
14°
1
Hist. Avg.
40°
24°
2
Hist. Avg.
40°
24°
3
Hist. Avg.
41°
24°
4
Hist. Avg.
41°
24°
5
Hist. Avg.
41°
24°
6
Hist. Avg.
41°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Grafton
Grafton's January 2027 forecast shows daily high temperatures ranging from 26° to 51°, with overnight lows between 11° and 32°. The average high for January is 36° with an average low of 19°. 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 Grafton. See also: February | March | April.