S
M
T
W
T
F
S
29
37°
28°
30
41°
27°
1
41°
24°
2
37°
22°
3
31°
22°
4
33°
24°
5
32°
15°
6
25°
10°
7
24°
13°
8
32°
23°
9
33°
23°
10
34°
22°
11
35°
23°
12
36°
20°
13
31°
16°
14
25°
9°
15
21°
8°
16
28°
19°
17
33°
20°
18
33°
21°
19
35°
19°
20
32°
19°
21
32°
17°
22
33°
15°
23
24°
16°
24
31°
18°
25
23°
7°
26
25°
11°
27
26°
12°
28
28°
13°
29
26°
14°
30
25°
13°
31
27°
8°
1
28°
12°
2
30°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Carleton Place
Carleton Place's December 2026 forecast shows daily high temperatures ranging from 21° to 41°, with overnight lows between 7° and 28°. The average high for December is 30° with an average low of 17°. 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 Carleton Place. See also: January | February | March.