S
M
T
W
T
F
S
29
45°
31°
30
46°
30°
1
46°
24°
2
40°
23°
3
35°
24°
4
37°
29°
5
40°
32°
6
43°
31°
7
44°
27°
8
43°
25°
9
40°
25°
10
33°
22°
11
34°
26°
12
36°
28°
13
42°
26°
14
40°
25°
15
39°
26°
16
37°
25°
17
43°
23°
18
39°
22°
19
32°
17°
20
33°
11°
21
31°
10°
22
21°
12°
23
21°
12°
24
23°
17°
25
25°
20°
26
28°
22°
27
30°
11°
28
32°
12°
29
23°
22°
30
30°
24°
31
34°
23°
1
35°
23°
2
35°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Halton Hills
Halton Hills's December 2026 forecast shows daily high temperatures ranging from 21° to 46°, with overnight lows between 10° and 32°. 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 Halton Hills. See also: January | February | March.
