S
M
T
W
T
F
S
29
52°
37°
30
54°
37°
1
53°
39°
2
52°
36°
3
50°
32°
4
44°
29°
5
52°
35°
6
53°
35°
7
40°
32°
8
38°
25°
9
38°
23°
10
39°
26°
11
37°
29°
12
38°
29°
13
37°
28°
14
36°
19°
15
36°
24°
16
38°
29°
17
37°
30°
18
38°
28°
19
44°
22°
20
38°
18°
21
36°
18°
22
32°
19°
23
33°
24°
24
35°
23°
25
36°
22°
26
33°
17°
27
32°
16°
28
32°
12°
29
31°
16°
30
33°
27°
31
38°
21°
1
41°
16°
2
32°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Grafton
Grafton's December 2026 forecast shows daily high temperatures ranging from 31° to 54°, with overnight lows between 12° and 39°. The average high for December is 40° with an average low of 25°. 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 Grafton. See also: January | February | March.
