S
M
T
W
T
F
S
29
43°
26°
30
41°
25°
1
40°
25°
2
40°
26°
3
42°
26°
4
42°
29°
5
43°
28°
6
42°
32°
7
43°
32°
8
44°
31°
9
43°
25°
10
38°
25°
11
50°
27°
12
48°
28°
13
41°
28°
14
50°
25°
15
45°
22°
16
40°
19°
17
37°
24°
18
37°
26°
19
42°
26°
20
43°
27°
21
42°
28°
22
47°
26°
23
48°
28°
24
47°
31°
25
50°
20°
26
50°
19°
27
49°
17°
28
34°
20°
29
34°
25°
30
43°
24°
31
44°
26°
1
46°
28°
2
48°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Holliston
Holliston's December 2026 forecast shows daily high temperatures ranging from 34° to 50°, with overnight lows between 17° and 32°. The average high for December is 43° with an average low of 26°. 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 Holliston. See also: January | February | March.
