S
M
T
W
T
F
S
29
37°
27°
30
37°
25°
1
36°
23°
2
37°
20°
3
35°
19°
4
32°
28°
5
36°
31°
6
40°
35°
7
46°
29°
8
48°
26°
9
44°
23°
10
34°
22°
11
33°
21°
12
33°
20°
13
34°
24°
14
34°
24°
15
31°
21°
16
33°
24°
17
33°
26°
18
34°
28°
19
35°
29°
20
41°
27°
21
45°
22°
22
41°
23°
23
34°
28°
24
40°
27°
25
41°
25°
26
38°
24°
27
33°
15°
28
34°
14°
29
26°
10°
30
27°
8°
31
26°
10°
1
21°
12°
2
24°
17°
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 21° to 48°, with overnight lows between 8° and 35°. The average high for December is 35° with an average low of 22°. 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.
