S
M
T
W
T
F
S
29
51°
38°
30
54°
37°
1
51°
34°
2
44°
32°
3
42°
31°
4
48°
33°
5
51°
35°
6
42°
32°
7
38°
25°
8
37°
23°
9
36°
24°
10
39°
28°
11
43°
31°
12
44°
30°
13
43°
28°
14
37°
22°
15
39°
26°
16
39°
30°
17
42°
28°
18
41°
24°
19
39°
19°
20
35°
18°
21
33°
19°
22
33°
24°
23
39°
26°
24
38°
26°
25
35°
17°
26
35°
15°
27
33°
16°
28
32°
16°
29
32°
19°
30
33°
21°
31
33°
16°
1
34°
12°
2
31°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Dundas
Dundas's December 2026 forecast shows daily high temperatures ranging from 31° to 54°, with overnight lows between 10° and 38°. The average high for December is 39° with an average low of 25°. 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 Dundas. See also: January | February | March.