S
M
T
W
T
F
S
29
54°
28°
30
43°
20°
1
39°
18°
2
41°
27°
3
49°
27°
4
43°
26°
5
41°
26°
6
41°
19°
7
38°
18°
8
38°
25°
9
48°
26°
10
51°
26°
11
50°
25°
12
51°
26°
13
50°
26°
14
43°
21°
15
42°
24°
16
45°
16°
17
42°
13°
18
39°
11°
19
40°
12°
20
35°
13°
21
39°
18°
22
40°
14°
23
41°
15°
24
39°
17°
25
40°
21°
26
45°
23°
27
48°
19°
28
42°
15°
29
39°
16°
30
40°
11°
31
37°
10°
1
36°
19°
2
38°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arapahoe
Arapahoe's December 2026 forecast shows daily high temperatures ranging from 35° to 54°, with overnight lows between 10° and 28°. The average high for December is 42° 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 Arapahoe. See also: January | February | March.
