S
M
T
W
T
F
S
29
49°
32°
30
45°
29°
1
41°
26°
2
33°
21°
3
37°
30°
4
43°
27°
5
38°
29°
6
34°
20°
7
31°
17°
8
30°
18°
9
35°
20°
10
39°
26°
11
39°
26°
12
43°
25°
13
39°
25°
14
35°
25°
15
40°
21°
16
39°
23°
17
38°
20°
18
34°
16°
19
33°
12°
20
29°
9°
21
27°
21°
22
34°
18°
23
36°
18°
24
34°
13°
25
32°
13°
26
31°
22°
27
33°
18°
28
34°
13°
29
30°
12°
30
29°
17°
31
29°
7°
1
32°
2°
2
25°
7°
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 25° to 49°, with overnight lows between 2° and 32°. The average high for December is 35° 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 December weather will actually feel in Hamilton. See also: January | February | March.
