S
M
T
W
T
F
S
29
26°
13°
30
30°
19°
1
30°
18°
2
32°
21°
3
31°
23°
4
32°
20°
5
33°
21°
6
31°
10°
7
31°
20°
8
29°
18°
9
33°
17°
10
33°
19°
11
29°
15°
12
32°
17°
13
29°
24°
14
33°
21°
15
33°
24°
16
32°
24°
17
36°
25°
18
39°
23°
19
40°
19°
20
34°
14°
21
30°
11°
22
26°
13°
23
27°
12°
24
26°
8°
25
27°
7°
26
27°
7°
27
22°
14°
28
24°
8°
29
28°
2°
30
26°
6°
31
17°
11°
1
21°
20°
2
30°
18°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Monte Lake
Monte Lake's December 2026 forecast shows daily high temperatures ranging from 17° to 40°, with overnight lows between 2° and 25°. The average high for December is 30° with an average low of 16°. 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 Monte Lake. See also: January | February | March.