S
M
T
W
T
F
S
29
52°
28°
30
56°
24°
1
57°
22°
2
50°
25°
3
53°
26°
4
56°
27°
5
55°
28°
6
55°
22°
7
48°
18°
8
46°
22°
9
48°
21°
10
50°
22°
11
51°
19°
12
42°
15°
13
41°
16°
14
41°
22°
15
47°
20°
16
45°
23°
17
49°
23°
18
49°
25°
19
50°
18°
20
48°
20°
21
42°
17°
22
40°
17°
23
43°
18°
24
46°
12°
25
39°
11°
26
39°
8°
27
38°
11°
28
41°
13°
29
42°
11°
30
43°
12°
31
42°
15°
1
40°
11°
2
48°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in La Junta
La Junta's December 2026 forecast shows daily high temperatures ranging from 38° to 57°, with overnight lows between 8° and 28°. The average high for December is 47° with an average low of 19°. 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 La Junta. See also: January | February | March.