S
M
T
W
T
F
S
29
41°
31°
30
41°
31°
1
42°
37°
2
44°
41°
3
46°
39°
4
45°
38°
5
45°
34°
6
46°
32°
7
46°
34°
8
48°
39°
9
46°
38°
10
46°
34°
11
47°
31°
12
47°
31°
13
48°
39°
14
43°
35°
15
45°
33°
16
44°
39°
17
45°
40°
18
47°
39°
19
48°
38°
20
46°
38°
21
45°
40°
22
46°
38°
23
47°
35°
24
45°
30°
25
43°
25°
26
44°
26°
27
37°
26°
28
35°
29°
29
38°
25°
30
39°
30°
31
39°
38°
1
45°
34°
2
45°
29°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hamilton
Hamilton's December 2026 forecast shows daily high temperatures ranging from 35° to 48°, with overnight lows between 25° and 41°. The average high for December is 44° with an average low of 34°. 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 Hamilton. See also: January | February | March.
