S
M
T
W
T
F
S
29
50°
29°
30
43°
21°
1
34°
17°
2
34°
20°
3
39°
28°
4
40°
28°
5
38°
27°
6
37°
22°
7
33°
21°
8
33°
24°
9
42°
26°
10
46°
26°
11
46°
25°
12
45°
25°
13
45°
26°
14
37°
23°
15
38°
24°
16
38°
20°
17
37°
14°
18
36°
11°
19
35°
7°
20
28°
8°
21
27°
18°
22
37°
17°
23
38°
13°
24
37°
9°
25
34°
22°
26
37°
22°
27
39°
21°
28
38°
20°
29
38°
18°
30
37°
10°
31
34°
6°
1
27°
7°
2
27°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in McCool Junction
McCool Junction's December 2026 forecast shows daily high temperatures ranging from 27° to 50°, with overnight lows between 6° and 29°. The average high for December is 37° 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 McCool Junction. See also: January | February | March.
