S
M
T
W
T
F
S
29
36°
28°
30
37°
24°
1
37°
29°
2
38°
24°
3
39°
23°
4
32°
28°
5
35°
30°
6
38°
34°
7
42°
33°
8
47°
28°
9
48°
27°
10
36°
26°
11
35°
24°
12
34°
22°
13
34°
23°
14
33°
20°
15
31°
15°
16
29°
24°
17
32°
23°
18
34°
26°
19
35°
27°
20
35°
29°
21
41°
24°
22
41°
25°
23
36°
29°
24
39°
29°
25
42°
24°
26
38°
21°
27
35°
18°
28
33°
16°
29
32°
19°
30
28°
10°
31
27°
12°
1
22°
15°
2
31°
15°
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 22° to 48°, with overnight lows between 10° and 34°. The average high for December is 35° with an average low of 24°. 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.