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