S
M
T
W
T
F
S
30
25°
22°
1
24°
12°
2
12°
11°
3
12°
4°
4
13°
0°
5
13°
6°
6
6°
2°
7
5°
1°
8
9°
4°
9
8°
3°
10
8°
1°
11
31°
4°
12
31°
13°
13
17°
12°
14
14°
6°
15
15°
5°
16
19°
6°
17
9°
3°
18
25°
9°
19
28°
17°
20
17°
5°
21
14°
7°
22
30°
14°
23
33°
26°
24
30°
7°
25
7°
3°
26
5°
-7°
27
-5°
-8°
28
-2°
-9°
29
7°
-5°
30
18°
7°
31
14°
4°
1
10°
4°
2
9°
-1°
3
1°
-3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hamilton
Hamilton's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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.
