S
M
T
W
T
F
S
29
42°
31°
30
42°
31°
1
43°
38°
2
47°
40°
3
47°
37°
4
46°
34°
5
48°
31°
6
48°
31°
7
45°
32°
8
45°
36°
9
48°
34°
10
44°
30°
11
45°
30°
12
44°
31°
13
48°
36°
14
43°
35°
15
52°
35°
16
47°
38°
17
45°
35°
18
46°
36°
19
48°
37°
20
46°
36°
21
45°
38°
22
48°
36°
23
47°
34°
24
45°
32°
25
45°
28°
26
44°
28°
27
38°
29°
28
37°
31°
29
39°
28°
30
39°
35°
31
43°
39°
1
47°
33°
2
46°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cougar
Cougar's December 2026 forecast shows daily high temperatures ranging from 37° to 52°, with overnight lows between 28° and 40°. The average high for December is 45° with an average low of 34°. 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 Cougar. See also: January | February | March.
