S
M
T
W
T
F
S
29
44°
19°
30
43°
14°
1
30°
14°
2
27°
15°
3
29°
24°
4
33°
27°
5
39°
26°
6
38°
26°
7
39°
25°
8
39°
25°
9
35°
21°
10
36°
23°
11
37°
19°
12
36°
18°
13
31°
12°
14
27°
11°
15
24°
22°
16
35°
22°
17
34°
23°
18
Hist. Avg.
30°
12°
19
Hist. Avg.
30°
12°
20
Hist. Avg.
30°
12°
21
Hist. Avg.
30°
11°
22
Hist. Avg.
30°
11°
23
Hist. Avg.
29°
11°
24
Hist. Avg.
29°
10°
25
Hist. Avg.
29°
10°
26
Hist. Avg.
29°
10°
27
Hist. Avg.
29°
10°
28
Hist. Avg.
28°
10°
29
Hist. Avg.
28°
10°
30
Hist. Avg.
28°
9°
31
Hist. Avg.
28°
9°
1
Hist. Avg.
28°
9°
2
Hist. Avg.
28°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Cascade Mountain
Cascade Mountain's December 2026 forecast shows daily high temperatures ranging from 24° to 44°, with overnight lows between 11° and 27°. The average high for December is 35° with an average low of 20°. 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 Cascade Mountain. See also: January | February | March.
