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