S
M
T
W
T
F
S
29
35°
28°
30
34°
24°
1
33°
24°
2
33°
28°
3
34°
30°
4
38°
28°
5
37°
33°
6
40°
31°
7
36°
31°
8
33°
30°
9
35°
26°
10
30°
27°
11
42°
27°
12
41°
29°
13
33°
28°
14
36°
24°
15
35°
20°
16
31°
26°
17
33°
29°
18
36°
28°
19
35°
28°
20
34°
29°
21
36°
29°
22
39°
30°
23
40°
33°
24
42°
27°
25
42°
22°
26
41°
23°
27
29°
17°
28
30°
23°
29
31°
27°
30
38°
28°
31
38°
29°
1
39°
28°
2
42°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Toronto
Toronto's December 2026 forecast shows daily high temperatures ranging from 29° to 42°, with overnight lows between 17° and 33°. The average high for December is 36° with an average low of 27°. 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 Toronto. See also: January | February | March.
