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