S
M
T
W
T
F
S
29
34°
14°
30
35°
21°
1
34°
14°
2
31°
13°
3
29°
14°
4
32°
14°
5
34°
13°
6
31°
9°
7
29°
14°
8
30°
11°
9
31°
11°
10
31°
9°
11
29°
11°
12
31°
16°
13
37°
17°
14
38°
17°
15
36°
14°
16
33°
22°
17
39°
22°
18
40°
18°
19
37°
21°
20
36°
20°
21
38°
21°
22
40°
20°
23
36°
21°
24
34°
23°
25
39°
24°
26
41°
22°
27
41°
23°
28
42°
20°
29
40°
16°
30
34°
11°
31
Hist. Avg.
28°
4°
1
Hist. Avg.
28°
4°
2
Hist. Avg.
28°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Estes Park
Estes Park's December 2026 forecast shows daily high temperatures ranging from 29° to 42°, with overnight lows between 9° and 24°. The average high for December is 35° with an average low of 17°. 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 Estes Park. See also: January | February | March.