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