S
M
T
W
T
F
S
29
48°
24°
30
53°
20°
1
54°
20°
2
49°
22°
3
51°
23°
4
53°
25°
5
53°
24°
6
52°
18°
7
45°
14°
8
42°
21°
9
44°
20°
10
46°
22°
11
47°
13°
12
42°
12°
13
41°
14°
14
41°
16°
15
46°
15°
16
41°
20°
17
47°
17°
18
44°
21°
19
47°
14°
20
44°
15°
21
41°
12°
22
41°
13°
23
44°
13°
24
44°
10°
25
40°
9°
26
40°
7°
27
39°
8°
28
43°
13°
29
44°
12°
30
43°
12°
31
44°
15°
1
42°
10°
2
47°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Arvada
Arvada's December 2026 forecast shows daily high temperatures ranging from 39° to 54°, with overnight lows between 7° and 25°. The average high for December is 45° 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 Arvada. See also: January | February | March.
